Etymology: Jill is a variant of the proper name Gill, itself a female form either of Julius (then also Gillian or Jillian) or of Aegidius.
- (given name, female, from Latin, )
- generic use for any female (as Sheila in Australian English), especially paired (since the 15th c., compare Ienken and Iulyan) with the male Jack; also in the compound jillstrap (also shortened as jill), the female counterpart of a jockstrap
- 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').
- A term used to describe your right hand, usually hinting at masturbation.
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