piddock
/ˈpɪdək/
noun
- A type of saltwater clam that bores into soft rock, wood, or clay to make a burrow.
- The piddock uses its rough shell to drill holes in sandstone along the coast.
- We found several piddock shells washed up on the beach after the storm.
- Piddocks are important because their burrowing helps break down old piers and rocks.