A word made famous by professional wrestler Bobby Lashley. He meant to say "bastard," but he speaks with a lisp, and instead it came out like "bathturd." It instantly became an internet phenomenon incredibly popular within the Internet wrestling community. It made Lashley full of teh lulz.
"You say your name is Finlay, and you love to fight...well I say your name is Finlay, and you're a bathturd."
n. software that is no longer sold or supported by the original publisher / developer, often found as free downloads on the internet because it cannot be obtained elsewhere. Not legal, but often seen as morally acceptable because the company that made it is no longer selling the title, nor releasing it as freeware, therefore abandonware is "keeping the gamealive", so to speak.
Doom II is not abandonware because idstill sells it, while The Incredible Machine is not sold, therefore is abandonware.