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1.
Shortening of 'Chronic', street slang for very strong skunk marijuana - Often heard used on South London housing estates.
"Blud, you need to go and link with Redeye. He's got some heavy CHRO!"
by DC December 10, 2004
 
2.
Eastern European slang for "large ass hole".

commonly used.
bill: chros's freak me out.
Betty: why do large ass holes freak you out?
bill: just because -.-
by Lady Hamster January 22, 2011
 
3.
(noun)

Pronunciation: (CH-Row)

Definition: The top of the crack of your ass.
"When Stacey bent over you could TOTALLY see her chro!"

by Kelita Neutrino March 27, 2008
 
4.
also log man takes it doesnt he badgerbadgerbadger mwhahaha
ye i take chro, dont do drugs init
by hmmmmm April 15, 2005