Definitions

1. noun

a large wavy-edged marine snail with a long siphon and a powerful foot, especially the species Buccinum undatum.

“The beachcomber found a large whelk shell on the shore.”

2. noun

a person who is awkward or clumsy in movement.

“He’s a bit of a whelk on the dance floor, but he’s always up for a laugh.”