pismo clam definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a heavy-shelled, edible clam (Tivela stultorum) found on sandy beaches along the coast of California and Mexico
Origin: after Pismo Beach, Calif.
pismo clam definition by American Heritage Dictionary
A large, thick-shelled, edible marine clam (Tivela stultorum) of the southern Pacific coast of North America.
Origin: After Pismo Beach, a city of southwest California.