Top Definition
A noun used to describe the state of mind a person is in, after the intake of drugs has an ecstasy affect on your brain.
After a guy has just taken drugs he becomes somewhat retarded in the head. often acting weird and screaming words like "timmy" or "bonno" this is what a bonno is.
by Imogen-Joanne-jonathan-carr June 19, 2009
Someone who is muscular. Someone who is cool. In other words, something or someone that is gnarly.
The waves were bonno.
by Ducky007 January 04, 2008
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.