1 definition by Tappet

Top Definition
Moving part of an engine that rattles when loose resulting in engine failure. Slang usage as someone who's tappets are slightly loose (not quite with it - a.k.a someone who is a few sandwiches short of a picnic)

South African variation is of a tappet being a redneck in the american sense of the word
Donny is a real tappet.
Harvey is so tappet
by Tappet November 13, 2008

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×