name: A female given name (common: 1 in 704 females; popularity rank in the U.S.: #159)
name: A surname (very rare: popularity rank in the U.S.: #71634)
noun: A female given name from Latin.
noun: Generic use for any female (as Sheila in Australian English), especially paired (since the 15th c., compare Ienken and Iulyan) with the male Jack.
noun: A young woman; a sweetheart; like the variant spelling Gill it was also associated with various assertive uses of the term flirt, as in flirtgigg (used by William Shakespeare for a 'woman of light or loose behavior').
noun: A jillstrap: the female counterpart to a jockstrap.
verb: (uncommon, vulgar, slang, of a female) To masturbate.
noun: A female ferret.
noun: A pelvic protector, a woman’s equivalent of a man’s jock.
noun: Clipping of Jillian. [A female given name from Latin, variant of Gillian.]
noun: Misspelling of gill. [(animal anatomy) a breathing organ of fish and other aquatic animals]