Adjective : lowering skies.    From Dictionary.com. 

This was how Rebus remembered the Highlands - louring and forbidding.    From Wordnik.com.  [Strip Jack]

In the east, over Maslovska, a single lurid mass was louring, but Karl.    From Wordnik.com.  [Childhood] Reference

The deposed Lord Coercer stood decorous beside his louring young rival.    From Wordnik.com.  [The Golden Torc]

There was something sinister and empty about the place, a louring sense of disease.    From Wordnik.com.  [Strip Jack]

Unseal that louring eye from its repose; thy lowly couch of scattered leaves, O Hector, quit!.    From Wordnik.com.  [Rhesus] Reference

The ash, compounded with lamp black, gives a soft cold gray for dark louring clouds, or for twilight away from the sun's influence.    From Wordnik.com.  [Field's Chromatography or Treatise on Colours and Pigments as Used by Artists] Reference

Alone, blue black is useful as a cool shade for white draperies; and compounded with cobalt, affords a good gray for louring clouds.    From Wordnik.com.  [Field's Chromatography or Treatise on Colours and Pigments as Used by Artists] Reference

Who, then, can shadow forth the fate that is reserved for this tropical gem of the ocean, where all around is so dark and louring?.    From Wordnik.com.  [Lands of the Slave and the Free Cuba, the United States, and Canada] Reference

It was a darkening wilderness of louring sky, angry sea, and mighty cliffs, and the elemental beauty of it brought a return of perspective.    From Wordnik.com.  [Fox Evil]

Day broke with rather more than half a gale blowing beneath a louring sky.    From Wordnik.com.  [The False Faces Further Adventures from the History of the Lone Wolf] Reference

The captain squared himself toward Lanyard, his face louring, his jaw pugnacious.    From Wordnik.com.  [The False Faces Further Adventures from the History of the Lone Wolf] Reference

And veils the louring skies with mournful But when his limbs upon the pile were hud.    From Wordnik.com.  [Ovid's Metamorphoses, tr. by dr. Garth, and others] Reference

Sunday was cloudy and cold, with a little rain; Monday was louring, Tuesday unsettled.    From Wordnik.com.  [A Budget of Paradoxes, Volume I (of II)] Reference

He paused there, louring at his subaltern with haunted eyes ablaze in a face like parchment.    From Wordnik.com.  [The False Faces Further Adventures from the History of the Lone Wolf] Reference

So they held their tongues and watched the approach of the boat with gloomy, louring glances.    From Wordnik.com.  [Two Gallant Sons of Devon A Tale of the Days of Queen Bess] Reference

Sometimes she caught him looking at her with a louring invidiousness that she could hardly bear.    From Wordnik.com.  [The Mayor of Casterbridge] Reference

WHILE you, my Friend, from louring wintery plains Now pale with fnows, now black with drizzling rains.    From Wordnik.com.  [Almada hill: an epistle from Lisbon] Reference

Some hailstones fell on board about this time, and the clouds looked exceedingly black and louring above us.    From Wordnik.com.  [A General History and Collection of Voyages and Travels — Volume 14] Reference

"The country people look with a kind of superstitious awe at the red louring aspect of the sun thro 'the fog.".    From Wordnik.com.  [NYT > Home Page]

"Ah ha, here it is," said Mendes, as we jumped into a forecourt and stared at a massive shelf louring over the entrance.    From Wordnik.com. Reference

Of their tenant he was feeling just then a bit less sure than he had half-an-hour since; his regard was louring and mistrustful.    From Wordnik.com.  [The Lone Wolf A Melodrama] Reference

The louring cloud passed, but it was felt that visits to be prudent must be rare; for the first time a week went by without a meeting.    From Wordnik.com.  [Robert Browning]

"Yes, sir," said the figure of mud, darkly louring under its tin hat, "but I know where the blighter is now, and I'll get the beggar yet.".    From Wordnik.com.  [Old Junk] Reference

Mr. Fourcroy in his general system of chemistry, and particularly on the co - louring part of the blood, has offered the following theory.    From Wordnik.com.  [Transactions of the American Philosophical Society] Reference

Already met, the louring hosts appear.    From Wordnik.com.  [The Iliad of Homer] Reference

Driving back shadows over louring hills.    From Wordnik.com.  [Romeo and Juliet] Reference

What louring star now envies thy estate.    From Wordnik.com.  [The Second part of King Henry the Sixth] Reference

This louring tempest of your home-bred hate.    From Wordnik.com.  [The Life and Death of Richard the Second] Reference

Evening was in the wood, louring with storm.    From Wordnik.com.  [What I bought – 23 January 2008 | Comics Should Be Good! @ Comic Book Resources] Reference

As day-light funk, and brought in louring night Her (hadowy offspring, unfubftantial both.    From Wordnik.com.  [The Works of the English Poets] Reference

For the black gun-deck's louring roof.    From Wordnik.com.  [Victories of Love] Reference

Heaven's cheerful face, the louring element.    From Wordnik.com.  [Paradise Lost] Reference

Armed cap-a-pie from the topmost louring curl.    From Wordnik.com.  [Lysistrata] Reference

And in wing'd accents, louring, thus replied.    From Wordnik.com.  [The Odyssey of Homer] Reference

And took to their brooms 'neath a louring sky.    From Wordnik.com.  [Songs of Childhood] Reference