1)Usually a guy who you meet (either online or in some random encounter) who seems to be your soulmate because he likes all the same music and all the same movies, he tells you how amazing you are and says he wants to have a serious relationship. Then when you want to meet him again (or for the first time in person if you met online) he says he is super busy but he really wants to see you soon... then he suddenly stops being in touch with you, ignores calls, cancels any plans you made, changes his number, blocks you or seems to vanish from the face of the earth. Essentially he is so sweet you cannot understand why he would not be answering unless something terrible happened like he died and you have no way of knowing. He becomes a ghost. He haunts your thoughts and you can never figure out what happened.
Similar to when someone is a catfish except that often everything he said about his favorite music and where he went to high school etc. was really true but he has lied about one thing that he doesn't want you to know like he is already married or he said he had a job but he is really unemployed and broke and doesn't want you to find out.
2)Also a real boyfriend who loves you and treats you like a princess... until he finds someone better and doesn't have the heart to break up with you because he thinks it is too difficult to break up and he is a scared pansy ....so he just blocks you and unfriends you on FB and totally vanishes without a word.
Girl 1: My boyfriend hasn't called in a month... I hope he is okay... do you think he maybe broke his phone or lost it?
Girl 2: No hun, that guy is a ghoster and you are never gonna see him again so move on before you go crazy wondering what happened.
by LadyLayla June 25, 2015
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A haunted toaster, or the ghost of a dead toaster.
Guy 1: Guys, I think we have a ghoster problem.
Guy 2: Our toaster's haunted?
Guy 1: Worse, our toaster's doing the haunting.
by lordofspades April 25, 2021
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A Ghoster is a drinking binge that lasts for over 2 days. The requirements are no sleeping, no eating, drift between many houses and pubs that are not your own possibly even a park. The drink of choice will always be Strongbow.
"Crack open another Strongbow, I'm on a Ghoster"
by BobbyTheGhoster December 13, 2009
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a Ghoster (noun) is a type of very large shit, one that you can't see in the pan.

Because of the speed and force that large poo's vacate the rectum, they carry great momentum and such turds are difficult to stop, therefore, they keep going all the way through the toilet so that you can't see them upon peering down the loo.

Such dumps are very frustrating to a shitter as they leave no sense of achievement, as big craps require hard work.
John enters after using the toilet
John: Dammit! I just did a ghoster.
Tim: Ohnoes! I hate it when that happens!

...some seconds later
Tim: Why were you looking down the toilet?
by n00dle12357 April 14, 2010
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Usually a sociable person who takes a lot of photos and then changes profile pictures when you least expect. They can usually do this without anyone knowing and the pictures seem to change in a 'ghostly' fashion.
by Ghost Buster 282828 October 1, 2009
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A disembodied erection. A boner that does not exist in physical form. The experience of having an erection, but without the physical act of becoming erect. Similar to phantom pains experienced with limb amputation, but with penises.

Occurring in para/quadriplegics with non-functioning penises, those who have had their penis severed and removed and male ghosts.
Though, medically speaking, Eric had no feeling below his waste, he could still get a ghoster every time a pretty girl walked by.
by AvoidTheNoid July 4, 2010
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To work through the night to hit a deadline. Terminology used mainly within the design and construction industry.
Deadline is looming! Looks like we will have to do a ghoster this evening.
by ghoster limited September 26, 2006
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