noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Any shark historically placed in the genus Cestracion, now in Heterodontus (bullheads, and the horn shark and Port Jackson shark), Sphyrna (certain hammerheads), and Eusphyrna (winghead shark). archaic

Etymology

Ancient Greek κέστρα (késtra, “hammer; a kind of fish”) + κίων (kíōn, “pillar; uvula; nasal septum”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.