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2.
diminutive
the smallest (usually animal in a litter)
He was the runt of the litter.
by Anonymous November 07, 2002
 
1.
An outsider, someone who tries to be cool even though they have no friends.
You runt!
by modafL1c$r December 05, 2011
 
3.
a combination of the words real and cunt; also can be defined as a small person in general
damn that shawtys the runt of the litter but id still tap that nameeen?
by sexygurlyouwantit January 12, 2010
 
4.
1. a troublemaker (usually a small and cheeky person)
2. someone who goes out of their way to annoy people in a humorous way

Originates from two great ancient runts 'Raphaelues Noethesus' (Queen Runt) and 'Doronellius Portnoilithus' (Junior Vice President Runt). The two caused havoc wherever they could unleashed all sorts of Runtness.
"Oi! You little bastard! You are such an annoying little runt!"

"Hey Raphaelues - lets unleash all sorts of runtness"
 
5.
the stupid little fucker I work for.
if that runt asks me to send one more poxy email on his behalf I'm gonna tell him to get fucked.
by liss123 June 12, 2008
 
6.
A mouthy little monkey whose parents don't give a shit what he does.
The little runt is leaving nasty comments on youtube again.
by geezerdk January 01, 2012
 
7.
Born smaller than others, either an animal or human
The puppy was the runt.

He was the runt of the three children.
by Nerdtress November 02, 2009