Essentially useless software (or hardware) that is purchased by computer-illiterate people.
"Dude, Musicmatch is complete tardware..."
by Gojuice November 30, 2006
1 more definition
Software or hardware with obvious design flaws that should have been fixed before release.
Windows ME is the essence of tardware, you have to factor crash and reboot time into anything you hope to get done.
by 1hoser February 06, 2007