lass

[ las ]
/ læs /

noun

a girl or young woman, especially one who is unmarried.
a female sweetheart: a young lad and his lass.

Origin of lass

1250–1300; Middle English las, lasse, of uncertain origin
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British Dictionary definitions for lass

lass

/ (læs) /

noun

a girl or young woman
informal a familiar form of address for any female

Word Origin for lass

C13: origin uncertain
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012