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1.
Someone thats been alive for a long time
The word can be used like this "Man that old timer knows his stuff, go ask him how to do it" If you need fishing tips ask a old timer they know there stuff
by Mike May 01, 2004
 
2.
What my friend Cathy P. from NJ calls Alzhiemers Disease.
My Grandmother is suffering from "Oldtimers disease", she can't remember shit anymore.
by up2ng April 20, 2005
 
3.
Old person. Usually an insult, and often used when talking directly to said old person. Slightly less derogatory than geezer.
"Hey, old-timer, why don't you learn how to parallel park?
by Rodney Basil June 02, 2004
 
4.
A generalized condition of forgetfulness or short-term memory loss due to old age, similar to, and almost as bad as, Alzheimer's or senile dementia, but without any specific pathology.
Man, by the time I get from my recliner to the other room, I forget what I went there for. Ever since I turned 50, my Oldtimers has really kicked into high gear!
by BackInBlack60 April 21, 2011
 
5.
The greatest board on the planet, with even greater people on it.

see also: OT's
"ooooh, your on the net?"
"yeah..."
"whatch'a on?"
"Old timers of course!!"
by emily November 24, 2003
 
6.
Like at Chili's, the hamburger. Also, Getting in the anus by a really old guy.
Only made better when some1 actually asks for the "oldtimer" at Chili's.
by vcsuperfan November 20, 2007
 
7.
When you are in the shower and you let your hand get wrinkly from the water, so it looks like an old person's hand, before you start masturbating.
He's been in the shower for almost half an hour now! He must be giving himself an old timer.
by Waldoski November 05, 2007