/ ˈlɜːtʃə(r); NAmE ˈlɜːrtʃ-/ noun
( BrE ) a dog that is a mixture of two different breeds of dog, one of which is usually a greyhound
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WORD ORIGIN
early 16th cent. (originally referring to a prowler or petty thief): from obsolete lurch remain in a place furtively, variant of lurk .