brick: n.

A piece of equipment that has been programmed or configured into a hung, wedged,unusable state. Especially used to describe what happens to devices like routers or PDAs that run from firmware when the firmware image is damaged or its settings are somehow patched to impossible values. This term usually implies irreversibility, but equipment can sometimes be unbricked by performing a hard reset or some other drastic operation. Sometimes verbed: “Yeah, I bricked the router because I forgot about adding in the new access-list.”.