(n.) 1. one who lacks mental stability 2. a lack of mental stability, e.g. insanity 3. The portion of the skull enclosing the brain
1. "That braincase almost ran into me!" 2. "He must have a braincase if he's wearing those clothes." 3. In the car crash, Mike cracked his braincase, resulting in his death.
by Tim R. March 05, 2005