Pina

·add. ·- A cone of silver amalgam prepared for retorting; also, the residuary cone of spongy silver left after the retorting.

pina
pīna, ae, f., = πῖνα (less correctly pinna, = πίννα), the sea-pen , a kind of mussel , Cic. Fin. ...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
pina
pīna ae, f , πῖνα, the sea-pen, spiny mussel. ...

An Elementary Latin Dictionary