Top Definition
Military intelligence (IQ) Catagory Four. The lowest intelligence catagory allowed to serve in the military.

They were documented to have a much greater number of accidents and injuries, especially in combat.
Watch out for Jones. He's a Cat 4 and Cat 4s will get you killed.
by shortdog77 March 27, 2011
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.