v. to restrict blood flow in order to administer heroin intraveneously.
"i caught him with a belt ready to tie off."
by wayfarer April 27, 2005
to hook a personal lanyard to a horizontal lifeline system or other safety device.
He will tie off to the safety rope.
by lizzyb June 02, 2007
Office slang : masturbate furiously while at work. Usually in a conspicuous space and getting away with it.
Gareth said he was going to the photocopier to tie off.
by Mr John Gilbert esq. July 14, 2006