Verb (used without object) : to limber up before the game.    From Dictionary.com. 

Verb (used with object) : She tried to limber up her wits before the exam.    From Dictionary.com. 

(With us were some limbers bringing up ammunition.).    From Wordnik.com.  [Life in a Tank] Reference

I had decided that he had best stay and look after the limbers.    From Wordnik.com.  [Bullets & Billets] Reference

Soon G.S. wagons and limbers and 18-pounders were passing forward.    From Wordnik.com.  [The Story of the 2/4th Oxfordshire and Buckinghamshire Light Infantry] Reference

No transport or ammunition limbers were safe from the enemy's guns.    From Wordnik.com.  [Adventures of a Despatch Rider] Reference

Our teams and limbers had come up, all except one team of C Battery.    From Wordnik.com.  [Pushed and the Return Push] Reference

On such ground limbers and carts will have to be emptied if necessary.    From Wordnik.com.  [The Fifth Battalion Highland Light Infantry in the War 1914-1918] Reference

"Got any ammunition left after filling up the limbers?" he asked quickly.    From Wordnik.com.  [Pushed and the Return Push] Reference

These limbers have come up from about three to four miles away, from the Regimental.    From Wordnik.com.  [Bullets & Billets] Reference

Divisional sign on flags and limbers, etc., was a red coloured intertwined double 8.    From Wordnik.com.  [The Seventeenth Highland Light Infantry (Glasgow Chamber of Commerce Battalion) Record of War Service, 1914-1918] Reference

Our batteries had horses and limbers in readiness for a quick rushing up of the guns.    From Wordnik.com.  [Pushed and the Return Push] Reference

Whirr and scream -- another dashed itself into the field between the guns and limbers.    From Wordnik.com.  [From Capetown to Ladysmith An Unfinished Record of the South African War] Reference

Tanks were represented by half limbers during these practices, and the shrapnel barrage by drums.    From Wordnik.com.  [The Story of the "9th King's" in France] Reference

The transport moved back to Potijze Wood, except the ration limbers, which went back to Poperinghe.    From Wordnik.com.  [The Story of the 6th Battalion, The Durham Light Infantry France, April 1915-November 1918] Reference

Stores were unloaded from the limbers at Ecoivres on to flat trucks, each of which was pulled by three mules.    From Wordnik.com.  [The Sherwood Foresters in the Great War 1914 - 1919 History of the 1/8th Battalion] Reference

It was a glorious sunny day, perhaps too hot, but that makes for good baseball, for it limbers up the players.    From Wordnik.com.  [Baseball Joe in the Big League or, A Young Pitcher's Hardest Struggles] Reference

There was a good field for all the limbers and horses adjoining, so on the whole it was quite a convenient place.    From Wordnik.com.  [Bullets & Billets] Reference

On these vehicles or limbers the gunners could remain in position and bring the weapons into action at any moment.    From Wordnik.com.  [Khartoum Campaign, 1898 or the Re-Conquest of the Soudan] Reference

And the next thing was the hissing shriek of a shell -- and plump it dropped, just under one of the Natal limbers.    From Wordnik.com.  [From Capetown to Ladysmith An Unfinished Record of the South African War] Reference

Captain White-Thomas, while on his way back to the limbers to get blankets for the injured, received a nasty wound.    From Wordnik.com.  [South Africa and the Transvaal War, Vol. 2 (of 6) From the Commencement of the War to the Battle of Colenso, 15th Dec. 1899] Reference

The gunners jump from their seats sharp as sailors, unhook the limbers, leaving the guns pointed towards the enemy.    From Wordnik.com.  [Impressions of a War Correspondent] Reference

Some tied themselves on gun-limbers and slept there, while their riderless horses gregariously followed the column.    From Wordnik.com.  [With Our Army in Palestine] Reference

Eventually we all got limbers built at Maritzburg, and equivalent gun-oxen to drag the guns separately from the wagons.    From Wordnik.com.  [With the Naval Brigade in Natal (1899-1900) Journal of Active Service] Reference

There being no room in their rear, their caissons and limbers stood off to their right on a flat piece of heavily wooded ground.    From Wordnik.com.  [The Story of a Cannoneer Under Stonewall Jackson] Reference

All the 12-pounders except two were in the first instance sent up without limbers, and therefore had to be limbered up to wagons.    From Wordnik.com.  [With the Naval Brigade in Natal (1899-1900) Journal of Active Service] Reference

As I have already explained, the guns of the 32nd and 37th field batteries, together with the limbers and ammunition, were sent on to.    From Wordnik.com.  [Khartoum Campaign, 1898 or the Re-Conquest of the Soudan] Reference

The mist from the coast had rolled inland; through it after dawn came miles of horsemen and wagons, guns, limbers, lorries, ambulances.    From Wordnik.com.  [With Botha in the Field] Reference

There was no room for two limbers to pass abreast, and they could be turned only by separating the two halves and turning one at a time.    From Wordnik.com.  [The Fifth Battalion Highland Light Infantry in the War 1914-1918] Reference

As soon as it is dusk the servants slink off across that turnip morass behind and drag our few belongings back to where the limbers are.    From Wordnik.com.  [Bullets & Billets] Reference

In five days we had everything, horses, limbers, field-cookers, Lewis guns, etc., the horses comparing unfavourably with those left behind.    From Wordnik.com.  [The Fifth Battalion Highland Light Infantry in the War 1914-1918] Reference

The members of the detachment were now directed to lie down under their guns and limbers, except the drivers, who declined to do so, and still stood at the heads of their mules.    From Wordnik.com.  [History of the Gatling Gun Detachment] Reference