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1.
otc
Over The Counter.
In referece to legal drugs sold OTC at drugstores/chemists.
"After doing Ice, OTC Ritalyn was never the same."
by Diego August 28, 2003
 
2.
A growing Indie Record Label (company) featuring major talents mainly from Southern Florida's hip hop scene.
Baby Glocka is O.T.C. Records, Inc. #1! They're OTC !
by Figgy Cap CEO August 15, 2011
 
3.
otc
On The Cool
Otc u need to chill out
by Vanola February 07, 2011
 
4.
otc
over the clothes; a girl that only lets you feel her up over her clothes
Dude, are you going to try and get with Erica?

Nah dude, not worth it, she's OTC.

Did you get any last night?
Nah man, the girl I was with was OTC.
by JimBroko June 13, 2011
 
5.
OTC
Out of The Club.

Is buying a private dance from a stripper out of the club, such as in a motel or her place, as opposed to the VIP room in the club.
I saw Bambi OTC at a short stay after the club closed; she blew me away with her special dance.
by Earl_the_Pearl July 29, 2012
 
6.
OTC
OTC is a South African expression it means On The Chise.

Chise pronounced CH-ICE is a word that means to flirt with or "chat up"
eg. John was chising this hot girl today.

Guy#1: Hey where is John?
Guy#2: Oh he's OTC
by Petetheodddog April 28, 2013
 
7.
OTC
meaning off-the-corner meant by chemists as in easily accesible chemicals, like table salt, instead of chemicals nearly impossible to get, mostly used when talking about production of reactive acids for used in chemistry such as explosives, in production of sulfuric and nitric acid fx.
low concentration H2O2 is pretty OTC and can be concentrated easily
by léatheist November 03, 2012