Verb (used with object) : safely entrenched behind undeniable facts.    From Dictionary.com. 

Verb (used without object) : to entrench on the domain or rights of another.    From Dictionary.com. 

We were near Mons when we had the order to intrench.    From Wordnik.com.  [The New York Times Current History: the European War, February, 1915] Reference

Shortly afterward General Wheeler sent us orders to intrench.    From Wordnik.com.  [The Rough Riders]

He had no better implement with which to intrench himself in the land than a clam-shell.    From Wordnik.com.  [Harvard Classics Volume 28 Essays English and American] Reference

Much will depend upon early intelligence, and meeting the enemy before they can intrench.    From Wordnik.com.  [The Campaign of 1776 around New York and Brooklyn] Reference

He had no better implement with which to intrench himself in the land than a clam - shell.    From Wordnik.com.  [Walking] Reference

Was nothing ever to penetrate the seven-walled solitude in which the organist chose to intrench herself?.    From Wordnik.com.  [The Atlantic Monthly, Volume 13, No. 77, March, 1864] Reference

Puebla, had been compelled to retreat toward Orizaba, and to intrench there while waiting for reenforcements.    From Wordnik.com.  [The French Immortals Series — Complete] Reference

"Of course, if you have declared war, we shall have to fight to a finish, unless," with a grin, "we can intrench.".    From Wordnik.com.  [The Broncho Rider Boys with Funston at Vera Cruz Or, Upholding the Honor of the Stars and Stripes] Reference

They should lead us to intrench ourselves more securely than ever within the sound rules for the investigation of truth.    From Wordnik.com.  [Blackwood's Edinburgh Magazine, Volume 61, No. 379, May, 1847] Reference

Hudson ran the vessel into a small bay, and sent a party in search of a good place to intrench themselves till the spring.    From Wordnik.com.  [Journeys Through Bookland, Vol. 5] Reference

We hear that three armies are going to get into line, intrench and rest, and then start afresh our victorious march on Paris.    From Wordnik.com.  [The New York Times Current History of the European War, Vol 1, Issue 4, January 23, 1915] Reference

The Twenty-third Corps reached the railroad about the close of day on August 31, having time to do no more than intrench our positions.    From Wordnik.com.  [Forty-Six Years in the Army] Reference

To understand that it is suicidal to turn his back to an enemy and that, if he cannot advance, he must intrench and hold on until dark.    From Wordnik.com.  [Military Instructors Manual] Reference

As regards our own men, there was at first considerable reluctance to intrench, as has always been the case at the commencement of a war.    From Wordnik.com.  [The New York Times Current History of the European War, Vol 1, Issue 4, January 23, 1915] Reference

Take care that the time designed and allotted does neither too much intrench upon the occasions of the outward man, nor upon the weakness of the inward man.    From Wordnik.com.  [Sacramental Discourses] Reference

Here, therefore, is great danger, lest one of these jurisdictions intrench upon the other, and discord arise between the keeper of the public peace and the overseers of souls.    From Wordnik.com.  [A Letter Concerning Toleration] Reference

Hill, sat down to intrench and watch the older nobleman.    From Wordnik.com.  [Hugh Wynne, Free Quaker] Reference

Truth and right do not intrench themselves in repelling silence.    From Wordnik.com.  [The Earth Trembled] Reference

Officers must be able to choose ground and properly intrench it.    From Wordnik.com.  [Manual of Military Training Second, Revised Edition] Reference

Meanwhile, for the winter we intrench ourselves along the Aisne.    From Wordnik.com.  [The Lost Road] Reference

Now I understand it is your purpose to intrench slavery behind the Constitution.    From Wordnik.com.  [A Report of the Debates and Proceedings in the Secret Sessions of the Conference Convention For Proposing Amendments to the Constitution of the United States, Held at Washington, D.C., in February, A.D. 1861] Reference

McPherson, my only military engineer, was directed to lay out a line to intrench.    From Wordnik.com.  [Personal Memoirs of General U. S. Grant — Complete] Reference

'Because,' I said, 'General, the enemy have had all night to intrench and reinforce.    From Wordnik.com.  [Chancellorsville and Gettysburg Campaigns of the Civil War - VI] Reference

Emeline had nearly three weeks in which to intrench herself with doubts and defences.    From Wordnik.com.  [The King Of Beaver, and Beaver Lights From "Mackinac And Lake Stories", 1899] Reference

Captain Damnation was made to retreat, and to intrench himself further off of Mansoul.    From Wordnik.com.  [The Holy war, made by King Shaddai upon Diabolus, for the regaining of the metropolis of the world; or, the losing and taking again of the town of Mansoul] Reference

This gave the victors an opportunity to intrench themselves practically at their leisure.    From Wordnik.com.  [The Story of the Great War, Volume V (of 12) Neuve Chapelle, Battle of Ypres, Przemysl, Mazurian Lakes] Reference

One can't exactly intrench oneself behind a wall with pistols and say 'Be my friend if you dare.'.    From Wordnik.com.  [Adam Johnstone's Son] Reference

First they would send out forty men to take possession of Montreal, intrench themselves, and raise crops.    From Wordnik.com.  [The Jesuits in North America in the Seventeenth Century] Reference

The English take possession of Lake George and intrench themselves at the south end in Fort William Henry.    From Wordnik.com.  [Canada: the Empire of the North Being the Romantic Story of the New Dominion's Growth from Colony to Kingdom] Reference

With these he was able to intrench his men and protect them against surprises by small parties of the enemy.    From Wordnik.com.  [Personal Memoirs of General U. S. Grant — Complete] Reference

Fortify, or rather intrench, at once, and concentrate all your troops for the field there as rapidly as you can.    From Wordnik.com.  [Personal Memoirs of General U. S. Grant — Complete] Reference

If the charge is not to be made at once, the troops intrench the advanced position, using sand bags if necessary.    From Wordnik.com.  [Manual of Military Training Second, Revised Edition] Reference

Howard turned to the left, charged up the hill and captured it before the enemy had time to intrench, taking many prisoners.    From Wordnik.com.  [Personal Memoirs of General U. S. Grant — Complete] Reference

General Grant, upon this, made up his mind to intrench, and with reinforcements complete the investment of the enemy's works.    From Wordnik.com.  [From Fort Henry to Corinth] Reference

He was to get as near the enemy as possible during the day and intrench himself so as to hold his position until the next morning.    From Wordnik.com.  [Personal Memoirs of General U. S. Grant — Complete] Reference

Administration; but with no powers that might be needless, intrench on the Crown, and cause embarrassment on the King's recovery, &c.    From Wordnik.com.  [Memoirs of the Court and Cabinets of George the Third, Volume 2 (of 2) From the Original Family Documents] Reference

If they can advance no farther, they must intrench and hold on until the fall of darkness or a favorable turn in the situation develops.    From Wordnik.com.  [Manual of Military Training Second, Revised Edition] Reference