Geoduck

n.

1.

(Zool.) A gigantic clam (Glycimeris generosa) of the Pacific coast of North America, highly valued as an article of food.

Noun

1.

geoduck - a large edible clam found burrowing deeply in sandy mud along the Pacific coast of North America; weighs up to six pounds; has siphons that can extend to several feet and cannot be withdrawn into the shell

clam