n. [ L. concha, Gr. ko`gchh. See Coach, n. ] 1. (Zool.) A name applied to various marine univalve shells; esp. to those of the genus Strombus, which are of large size. Strombus gigas is the large pink West Indian conch. The large king, queen, and cameo conchs are of the genus Cassis. See Cameo and cameo conch. [ 1913 Webster ]

☞ The conch is sometimes used as a horn or trumpet, as in fogs at sea, or to call laborers from work. [ 1913 Webster ]

2. In works of art, the shell used by Tritons as a trumpet. [ 1913 Webster ]

3. [ often capitalized ] One of the white natives of the Bahama Islands or one of their descendants in the Florida Keys; -- so called from the commonness of the conch there, or because they use it for food. [ 1913 Webster ]

4. (Arch.) See Concha, n. [ 1913 Webster ]

5. The external ear. See Concha, n., 2. [ 1913 Webster ]

‖n. [ LL. (in sense 1), fr. L. concha. See Conch. ] 1. (Arch.) The plain semidome of an apse; sometimes used for the entire apse. [ 1913 Webster ]

2. (Anat.) The external ear; esp. the largest and deepest concavity of the external ear, surrounding the entrance to the auditory canal. [ 1913 Webster ]

a. (Anat.) Pertaining to the concha, or external ear; as, the conchal cartilage. [ 1913 Webster ]

n. [ Cf. F. conchofère. ] (Zool.) One of the Conchifera. [ 1913 Webster ]

‖n. pl. [ NL., fr. L. concha + ferre to bear. ] (Zool.) That class of Mollusca which includes the bivalve shells; the Lamellibranchiata. See Mollusca. [ 1913 Webster ]

a. Producing or having shells. [ 1913 Webster ]

a. [ Conch + -form. ] Shaped like one half of a bivalve shell; shell-shaped. [ 1913 Webster ]

n. [ Formed by transposition fr. cinchonine. ] See Quinidine. [ 1913 Webster ]

n. [ Cf. F. conchite. See Conch. ] (Paleon.) A fossil or petrified conch or shell. [ 1913 Webster ]

a. Composed of shells; containing many shells. [ 1913 Webster ]

n. [ Gr. &unr_;; &unr_; shell + e'i^dos form: cf. F. conchoïde. ] (Geom.) A curve, of the fourth degree, first made use of by the Greek geometer, Nicomedes, who invented it for the purpose of trisecting an angle and duplicating the cube. [ 1913 Webster ]

a. [ Cf. F. conchoïdal. ] (Min.) Having elevations or depressions in form like one half of a bivalve shell; -- applied principally to a surface produced by fracture. [ 1913 Webster ]

a. (Zool.) Pertaining to, or connected with, conchology. [ 1913 Webster ]

n. (Zool.) One who studies, or is versed in, conchology. [ 1913 Webster ]

n. [ Conch + -logy. ] (Zool.) The science of Mollusca, and of the shells which they form; malacology. [ 1913 Webster ]

n. [ Conch + -meter. ] (Zool.) An instrument for measuring shells, or the angle of their spire. [ 1913 Webster ]

n. (Zool.) The art of measuring shells or their curves; conchyliometry. [ 1913 Webster ]

n. A kind of spiral curve found in certain univalve shells. Agassiz. [ 1913 Webster ]

{ , a. [ L. conchylium shell, Gr. &unr_;, dim. of &unr_;, equiv. to &unr_;. See Conch. ] Of or pertaining to shells; resembling a shell; as, conchyliaceous impressions. Kirwan. [ 1913 Webster ]

{ n., } n. See Conchologist, and Conchology. [ 1913 Webster ]

n. [ Gr. &unr_; + -metry. ] Same as Conchometry. [ 1913 Webster ]

a. Conchylaceous. [ 1913 Webster ]

n. [ Proto- + conch. ] (Zool.) The embryonic shell, or first chamber, of ammonites and other cephalopods. [ 1913 Webster ]

n. (Arch.) A squinch. [ 1913 Webster ]

‖n. pl. [ NL. See Solen, and Conch. ] (Zool.) Same as Scaphopoda. [ 1913 Webster ]