What is "buccinum"

Buccinum \Buc"ci*num\, prop. n. [L., a trumpet, a trumpet shell.] (Zo["o]l.) A genus of large univalve mollusks abundant in the arctic seas. It includes the common whelk ( Buccinum undatum).

Buccinum is a genus of medium-sized sea snails, marine gastropod mollusks in the family Buccinidae, the true whelks.

Snails in this genus are commonly called whelks, a name shared with several related and unrelated species. The common whelk Buccinum undatum is the most common representative of the genus in the northern Atlantic Ocean.