Top Definition
A wild, fast running ass.
Look at that Onager go!
by Darin June 05, 2003
A heavy catapult used wy back in dem midevil times
Prepare the onager! FIRE!!!!!!
by ranger FR K-4 February 19, 2005

Free Daily Email

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

Emails are sent from We'll never spam you.