1 definition by Furanku Leone
A word used to mask a swear word being said. The main purpose of the word is so no one knows that you are swearing.
Nyi is used when you hit your finger with a hammer in front children. If you hate your boss and you with to curse him. If you are very pissed off with some one. Simply say "Nyi" on it's own.
by Furanku Leone February 9, 2005