short for "nippleslip". When a female nipple or at least the areola is showing, its called a nipslip.
by Kaipo December 7, 2006

when you're wearing a shirt with out a bra and your nip slips out and you can see it and the public is like "WTF, YOUR NIP IS OUT!"
by hrtagm May 5, 2011

by aimeesexylips September 20, 2020
