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The Collaborative International Dictionary
warluck

Warlock \War"lock\, n. [OE. warloghe a deceiver, a name or the Devil, AS. w?rloga a belier or breaker of his agreement, word, or pledge; w?r covenant, troth (aki? to L. verus true; see Very) + loga a liar (in comp.), le['o]gan to lie. See 3d Lie.] A male witch; a wizard; a sprite; an imp. [Written also warluck.]
--Dryden.

It was Eyvind Kallda's crew Of warlocks blue, With their caps of darkness hooded!
--Longfellow.

Wiktionary
warluck

n. (obsolete form of warlock English)