Merriam-Webster Collegiate Dictionary - maiden

 I. noun  Etymology: Middle English, from Old English m?gden, m?den, diminutive of m?geth; akin to Old High German magad ~, Old Irish mug serf  Date: before 12th century  1. an unmarried girl or woman ; maid  2. a former Scottish beheading device resembling the guillotine  3. a horse that has never won a race  II. adjective  Date: 14th century  1.  a.  (1) not married a ~ aunt  (2) virgin  b. of a female animal  (1) never yet mated  (2) never having borne young  2. of, relating to, or befitting a ~  3. first, earliest a ship's ~ voyage the ~ flight of a spacecraft