A ghost is the spirit or soul of a dead person or animal which leaves its dead body and moans when it talks. Ghosts are well known to be characters in scary stories such as one story about the haunted house or Halloween. Back in the past, people used to think that ghosts were real but not any more on the present day.
by Eoin July 23, 2016

by Just a Helpful Person January 25, 2019

spamming peoples wall or news feed with the word "Ghosts!" and responding to any questioning comments with the same word in the attempt to haunt facebook, more effective when coordinated with another ghoster
by QTghosts September 23, 2011

The act of covertly observing other people having a good time - due either to shyness or creepiness.
Man: "Dude, did you see Kierston watching all of us from the bushes last night? That girl gives me the creeps..."
Dude: "Yeah, Man, she was totally ghosting our party!"
Dude: "Yeah, Man, she was totally ghosting our party!"
by NHalex April 27, 2013

Allowing da-herb smoke to pour out of you mouth in the shape of a ghost, and then inhaling it all back in.
Shitttt son, that ghost sent me flying...
by gooch&lads May 24, 2011

The act of hiding while a friend is having sex in the same room. As your friend didn't tell you to leave, and you are stuck there till your friend is done fucking, as afraid of being seen by the girl.
Dude...I was hanging out with my friend and he brought a girl up to bang without telling me, and I had to wait there ghosting for hours.
by littlelago January 12, 2014
