look up any word, like spook:
Buried; put six feet under the ground; coffinized.
Peeps be gettin deep sixed round here!
by Smitty Joe May 16, 2005
To dispose of an item at a landfill/dump.
Derek: Nice plasma tv tom, what did you do with your old console television?
Tom: Oh, I just got back from the landfill, I deep sixed that bitch.
Derek: Nice.
by Molson Dan October 07, 2005