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7.
sub
short for substitute teacher
We had a sub today in Calculus.
by berryeri May 15, 2005
 
1.
Sub
n. Short for "Submissive." The submissive person in a BDSM relationship or encounter.
I'm really more of a sub, myself, but I could learn some dom skills.
by Bad Grammar Must Die April 16, 2003
 
2.
Short for subwoofers; speaker subwoofers. Often referring to in car speakers.
"wow, man. hella phat subs in yo ride fo sho"
by brendan August 06, 2004
 
3.
sub
Common reference to a large sandwich often used by people in the North Eastern united states. (Submarine Sandwich)
I think I'm going to have a steak and cheese sub for lunch.
by Mike February 10, 2005
 
4.
Sub
(1) Abbreviation for submissive, in the context of Bondage, S&M, etc.

(2) Abbreviation for subwoofer; a type of loudspeaker that plays bass
Who's your new sub?

Damn, how many subs you got in that car? I heard it two blocks away.
by Pymp November 01, 2003
 
5.
Sub
Abbreviation for subliminal. An underhanded comment directed at a specific person meant to insult/embarrass them publicly on a social networking site (usually Facebook).
Ashley: Did you see Jefferey's status update? He wrote "I hate when a stupid ex flirts with your best friend right in front of you".

Jennifer: Was that supposed to be a sub ?Screw that jerk!
by xEmiNae June 10, 2011
 
6.
sub
short for subwoofer, a speaker that drmaticaly increases bass output
damn those subs were pumpin so much bass tha rust flew from his car
by CuznSmoke May 07, 2005