Shetl. dial. [app. an error for smurslin (cf. smircelin in the Eng. Dial. Dict.), corresponding to Icel. smyrslingr.] A species of clam.
1806. Neill, Tour Orkney & Shetl., 93. They have abundance of what are called culleocks and smurlins.… The smurlin or smuthlin is the Mya truncata, remarkable for a shrivelled leathery process at one end. Both these shell-fish are highly relished by the Shetlanders.
