1. Someone who is dead, communicating with teammates about enemy positions and actions - usually by way of team speak.
Origins, Online Multiplayer 1st person shooters: See - CounterStrike
1. (verb) Ghosting : When you have a TV with a crappy rabbit ear antenna and the signal is a bit off and you see some 'ghosting' on the screen.
2. (verb) A Computer geek term refering to the Software Ghost used to backup computer hard drives and make images. Especially useful when backing up a drive that will not boot properly. Also used to make images for distribution.
2a Well that users machine doesnt boot anymore but I'm ghosting it up to the server right now.
2b Her workstation should be ready in about an hour, I'm ghosting the image down now.