be brain dead

(redirected from is brain dead)

be brain dead

1. Literally, to lack brain activity, as after a brain injury. After the car accident, Kendra was brain dead. Despite the surgeon's best efforts, the patient was brain dead.
2. slang To be so mentally exhausted or lacking focus that one does something poorly and/or makes easily avoidable mistakes. Did I just say that two plus two equals five? Wow, I'm really brain dead today.
See also: brain, dead
References in periodicals archive ?
The truth is, however, that a patient who is brain dead can be sustained by intensive care.
A panel of doctors at a Kochi hospital met Thursday to determine whether a qualified organ donor is brain dead, a meeting that could block or pave the way for what could be the country's first organ transplant from a brain-dead donor.