brainpan

[breyn-pan] /ˈbreɪnˌpæn/
noun
1.
the skull or cranium.
Origin
before 1000; Middle English brayn panne, Old English brægenpanne. See brain, pan1
British Dictionary definitions for brainpan

brainpan

/ˈbreɪnˌpæn/
noun
1.
(informal) the skull