Lewis Short
pēlămis | pēlamys, ydis (noun F) : and , , , = πηλαμις and πηλαμύς
* A young tunnyfish (before it is a year old; afterwards called thynnus),Plin. 9, 15, 18, § 47; 32, 11, 53, § 146; Juv. 7, 120.
Charlton T. Lewis, Charles Short, A Latin Dictionary