bivalve

n (zoology 动) shellfish with a hinged double shell, eg a mussel or clam 双壳贝类（如贻贝或蛤）: [attrib 作定语] a bivalve mollusc 一种双壳软体动物.

bit by bit, bit part, bitch, bitchiness, bitchy, bite, biting, bitingly, bits, bitten, bitter, bitter-sweet, bitterly, bittern, bitterness, bitters, bittersweet, bitty, bitumen, bituminous, bivouac, bizarre, bk, blab, blabber, blabbermouth, black, black and blue, black art, black box, black coffee, black comedy, black economy, black eye, Black Friar, black hole, black ice, black magic, Black Maria, black mark,