'Gyrodus' definitions:

Definition of 'Gyrodus'

From: GCIDE

Gyrodus \Gyr"o*dus\ (j[i^]r"[-o]*d[u^]s), n. [NL., fr. Gr. gyro`s round + 'odoy`s tooth.] (Paleon.) A genus of extinct o["o]litic fishes, having rounded teeth in several rows adapted for crushing. [1913 Webster]