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3.
Formerly known as a retard, mongloid, or mouth breather. One that is retarded or mentally slow.
Look at that little yellow schoolbus full of trainables.
by Tim Norton December 06, 2003
 
1.
Affected with moderate mental retardation and capable of being trained in self-care and in simple social and work skills in a sheltered environment.
"Hey Frank, how come you haven't gotten up yet?" asked the teacher.
"I'm w-wet and sticky," replied the trainable.
by Joe1015 September 22, 2005
 
2.
(n.) Circa-1970's politically correct term for a mentally disabled person who is still able to follow simple instructions.
Don't call him a moron, please call that retarded person a trainable.
by Mango January 02, 2003
 
4.
Alleged politically correct term for a retard. Inevitably gave the politically incorrect a new word for retard.
Can be used in an excellent "you're in denial" style gambit.
"Dan, you're such a trainable"
"I'm not trainable!"
"AAHAHAHAHAHAAAA"
by J. P. Killham February 14, 2004
 
5.
Not completely hopeless in bed.
Eh, he's trainable.
by ~alli~ January 30, 2004