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Scalaria :: Scalaria (n.) Any one of numerous species of marine gastropods of the genus Scalaria, or family Scalaridae, having elongated spiral turreted shells, with rounded whorls, usually crossed by ribs or varices. The color is generally white or pale. Called also ladder shell, and wentletrap. See Ptenoglossa, and Wentletrap..

Volute :: Volute (n.) A spiral turn, as in certain shells..

Spink :: Spinii-spirulate (a.) Having spines arranged spirally. See Spicule.

Gyroidal :: Gyroidal (a.) Spiral in arrangement or action.

Valvata :: Valvata (n.) A genus of small spiral fresh-water gastropods having an operculum.

Bulimus :: Bulimus (n.) A genus of land snails having an elongated spiral shell, often of large size. The species are numerous and abundant in tropical America..

Air Vessel :: Air vessel () A vessel, cell, duct, or tube containing or conducting air; as the air vessels of insects, birds, plants, etc.; the air vessel of a pump, engine, etc. For the latter, see Air chamber. The air vessels of insects are called tracheae, of plants spiral vessels..

Triton :: Triton (n.) Any one of many species of marine gastropods belonging to Triton and allied genera, having a stout spiral shell, often handsomely colored and ornamented with prominent varices. Some of the species are among the largest of all gastropods. Called also trumpet shell, and sea trumpet..

Tube :: Tube (n.) A more or less cylindrical, and often spiral, case secreted or constructed by many annelids, crustaceans, insects, and other animals, for protection or concealment. See Illust. of Tubeworm..

Suspiral :: Suspiral (n.) A breathing hole; a vent or ventiduct.

Spirillum :: Spirifer (n.) Any one of numerous species of fossil brachipods of the genus Spirifer, or Delthyris, and allied genera, in which the long calcareous supports of the arms form a large spiral, or helix, on each side..

Curl :: Curl (v. i.) To contract or bend into curls or ringlets, as hair; to grow in curls or spirals, as a vine; to be crinkled or contorted; to have a curly appearance; as, leaves lie curled on the ground..

Gyratory :: Gyratory (a.) Moving in a circle, or spirally; revolving; whirling around..

Multispiral :: Multispiral (a.) Having numerous spiral coils round a center or nucleus; -- said of the opercula of certain shells.

Trica :: Trica (n.) An apothecium in certain lichens, having a spherical surface marked with spiral or concentric ridges and furrows..

Littorina :: Littorina (n.) A genus of small pectinibranch mollusks, having thick spiral shells, abundant between tides on nearly all rocky seacoasts. They feed on seaweeds. The common periwinkle is a well-known example. See Periwinkle..

Wind :: Wind (v. i.) To turn completely or repeatedly; to become coiled about anything; to assume a convolved or spiral form; as, vines wind round a pole..

Musculospiral :: Musculospiral (a.) Of or pertaining to the muscles, and taking a spiral course; -- applied esp. to a large nerve of the arm..

Curl :: Curl (v.) A ringlet, especially of hair; anything of a spiral or winding form..

Thread :: Thread (n.) The prominent part of the spiral of a screw or nut; the rib. See Screw, n., 1..

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