sand dollar

noun

any of various flat, disklike sea urchins, as Mellita testudinata or Echinarachnius parma, that live on sandy bottoms off the coasts of the U.S.

Origin of sand dollar

An Americanism dating back to 1880–85

Words nearby sand dollar

sand colic, sand crab, sand crack, sand cricket, sand dab, sand dollar, sand eel, sand flea, sand fly, sand grouse, sand hopper

British Dictionary definitions for sand dollar

sand dollar

noun

any of various flattened disclike echinoderms of the order Clypeasteroida, of shallow North American coastal waters: class Echinoidea (sea urchins)