A fork of Rural Dictionary
1) A nostril so big, a cock could literally fit inside of it.
2) Having intercourse with someone in a new and exciting orifice.
ex 1) Yo that girl had one hell of a Cock Nostril!
ex 2) Yo that was one hell of a Cock Nostril last night!
Someone with nostrils so large you could slide your dick right up their nose.
man, have you seen keisha's cock nostrils?
yea! aw sick dude!