Merriam-Webster Collegiate Dictionary - wench

 I. noun  Etymology: Middle English ~e, short for ~el child, from Old English wencel; akin to Old High German wankon to totter, waver and probably to Old High German winchan to stagger — more at wink  Date: 14th century  1.  a. a young woman ; girl  b. a female servant  2. a lewd woman ; prostitute  II. intransitive verb  Date: 1590 to consort with lewd women; especially to practice fornication  • ~er noun