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Having two adductor muscles, as a bivalve mollusk.

A mollusk having a shell consisting of two lateral plates or valves joined together by an elastic ligament at the hinge, which is usually strengthened by prominences called teeth. The shell is closed by the contraction of two transverse muscles attached to the inner surface, as in the clam, -- or by one, as in the oyst…

anket. That affair of the blanketing happened to thee for the fault thou wast guilty of. Smollett.

tal liberty, whose look sublime Hath bleached the tyrant's cheek in every varying clime. Smollett.

A glandular organ of bivalve mollusca, serving in part as a kidney.

A marine, bivalve mollusk, of the genus Teredo and allies, which burrows in wood. See Teredo.

, bores; as, the boring of cannon; the boring of piles and ship timbers by certain marine mollusks. One of the most important applications of boring is in the formation of artesian wells. Tomlinson.

A class of Molluscoidea having a symmetrical bivalve shell, often attached by a fleshy peduncle.

A class of Molluscoidea, including minute animals which by budding form compound colonies; -- called also Polyzoa.

A genus of large univalve mollusks abundant in the arctic seas. It includes the common whelk (B. undatum).

are formed in a groove of the foot, and issue from between the valves of certain bivalve mollusks, as the Pinna and Mytilus, by which they attach themselves to rocks, etc.

Painting in shades of one color; monochrome. Mollett.

Of or pertaining to the lowest subdivision of the rocks of the Silurian or Molluscan age; -- sometimes described as inferior to the Silurian. It is named from its development in Cambria or Wales. See the Diagram under Geology.

Gay or rich clothing. My heart groans beneath the gay caparison. Smollett.

A genus of oceanic heteropod Mollusca, having a thin, glassy, bonnet-shaped shell, which covers only the nucleus and gills.

To vomit. [Slang] Smollett.

ding; a lift. [Scotch] We bargained with the driver to give us a cast to the next stage. Smollett. If we had the cast o' a cart to bring it. Sir W. Scott.

A large division of Mollusca, including all except the bivalves; -- so called because the head is distinctly developed. See Illustration in Appendix.

The highest class of Mollusca.

Having a head; -- applied chiefly to the Cephalata, a division of mollusks.