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g at the bottom of the tube. -- Weavers' shuttle (Zoöl.), an East Indian marine univalve shell (Radius volva); -- so called from its shape. See Illust. of Shuttle shell, under Shuttle.

merous species of small marine bivalves belonging to Donax and allied genera in which the shell is wedge-shaped.

Any one of numerous species of elegant, usually white, marine shells of the genus Scalaria, especially Scalaria pretiosa, which was formerly highly valued; -- called also staircase shell. See Scalaria.

lewood. -- Wheel urchin (Zoöl.), any sea urchin of the genus Rotula having a round, flat shell. -- Wheel window (Arch.), a circular window having radiating mullions arranged like the spokes of a wheel. Cf. Rose window, under Rose.

Shelly. "Whelky pearls." Spenser.

A volution, or turn, of the spire of a univalve shell.

s used for making ropes or for plaiting, esp. Agrostis Spica-ventis. [Prov. Eng. & Scot.] Shelley.

road projections to prevent it from turning in the wood. See Illust. of Gudgeon. -- Wing shell (Zoöl.), wing case of an insect. -- Wing stroke, the stroke or sweep of a wing. -- Wing transom (Naut.), the uppermost transom of the stern; -- called also main transom. J. Knowles.

Any one of various species of marine bivalve shells belonging to the genus Avicula, in which the hinge border projects like a wing.

to survive the winter. Such eggs usually differ from the summer eggs in having a thicker shell, and often in being enveloped in a protective case. They sometimes develop in a manner different from that of the summer eggs. -- Winter fallow, ground that is fallowed in winter. -- Winter fat. (Bot.) Same as White sage,…

ecies of hymenopterous of the tribe Urocerata. See Tremex. (d) Any one of several bivalve shells which bore in wood, as the teredos, and species of Xylophaga. (e) Any one of several species of small Crustacea, as the Limnoria, and the boring amphipod (Chelura terebrans). -- Wood carpet, a kind of floor covering made o…

, the bellows fish. -- Woodcock owl, the short-eared owl (Asio brachyotus). -- Woodcock shell, the shell of certain mollusks of the genus Murex, having a very long canal, with or without spines. -- Woodcock snipe. See under Snipe.

Any species of Vermetus.

A marine shell of the genus Turbo. See Turbo.

several species of large marine gastropods belonging to the genus Yetus, or Cymba; a boat shell.