Definitions

1. noun

Plural of buccina; a Roman war trumpet; also, a type of shellfish, especially a whelk or a pen shell.

“The ancient Roman army’s buccinae echoed through the valleys, signaling the start of battle.”

2. noun

The siphonal canal of a marine bivalve mollusk, especially a pen shell or a whelk, which serves as a respiratory siphon.

“The buccina of the pen shell filters the water for nutrients and oxygen.”