Wiktionary
brain bucket
alt. 1 (context idiomatic sometimes jocular English) A protective helmet, as worn, for example, by a motorcyclist, bicyclist, or soldier in combat. 2 (context dated English) The skull. n. 1 (context idiomatic sometimes jocular English) A protective helmet, as worn, for example, by a motorcyclist, bicyclist, or soldier in combat. 2 (context dated English) The skull.
Usage examples of "brain bucket".
He sets his helmet on her desk, a scuffed black brain bucket with bullet-hole decals all over it.