One who is fearless; a pimp or player; a person who is dangerous in physical combat, a fighter.
"That guy just beat all 3 of us up at once! He is a real Rader.
by Omenfortuna December 16, 2008
Anal Inserter. Person giveing Anal sex.
Monica later found out that Matt was the Rader.
by Josh Parker February 29, 2004
about to get some hot lovin but too scared to initiate.
dont be such a rader and hit it!
by jhfyj March 25, 2005