Main Entry: cra·ni·um

Pronunciation: \ˈkrā-nē-əm\

Function: noun

Inflected Form(s): plural cra·ni·ums or -nia\-nē-ə\

Etymology: Medieval Latin, from Greek kranion; akin to Greek kara head — more at cerebral

Date: 15th century

: skull; specifically : the part that encloses the brain : braincase