wench

Concise Oxford English Dictionary © 2008 Oxford University Press:
wench /wɛn(t)ʃ/

▶noun

• 1 archaic or humorous a girl or young woman.

• 2 archaic a prostitute.

▶verb archaic (of a man) consort with prostitutes.

– derivatives
wencher noun.

– origin ME: abbrev. of obs. wenchel ‘child, servant, prostitute’; perh. rel. to OE wancol ‘unsteady, inconstant’.