A large-headed fish found in Pacific coastal waters, or a headstall used on horses that lacks a bit.
From Spanish 'cabezón,' literally meaning 'big head,' derived from 'cabeza' (head) with the augmentative suffix '-ón.' The word has both zoological and equestrian uses in English.
The cabezon fish earned its name honestly—its massive head makes up nearly a third of its body, which marine biologists think helps with bottom-feeding and camouflage in rocky reefs.
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