To haunt; to appear to in the form of an apparition.
To die; to expire.
To ghostwrite.
To sail seemingly without wind.
To copy a file or hard drive image.
To gray out (a visual item) to indicate that it is unavailable.
To forcibly disconnect an IRC user who is using one's reserved nickname.
To appear without warning; to move quickly and quietly; to slip.
To kill.
To break up with someone without warning or explanation; to perform an act of ghosting.
The practice of hiding prisoners from inspection from (possibly hostile) outside inspectors.
The blurry appearance of a television picture resulting from interference caused by multipath reception.
Ghost imaging.
A form of identity theft in which someone steals the identity, and sometimes even the role within society, of a specific dead person (the "ghost") who is not widely known to be deceased.
A problem with a keyboard where certain simultaneous keypresses trigger the action of a further key that was not in fact pressed.
A method of ending a personal relationship by stopping any contact with the other party and not providing an explanation.
Stories of ghosting often deal with broken-off romances, but it's worth mentioning that friend ghosting is real, and sometimes necessary.
The phenomenon of the writing on one side of a page in a notebook being partly visible on the other side.