Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Anatomy Any of various structures, such as the external ear, that resemble a shell in shape. Also called conch.
  • n. Architecture The half dome over an apse.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any shell-shaped structure.
  • n. The deepest indentation of the cartilage of the human ear, attaching to the mastoid bone.
  • n. An apse, or the plain semidome of an apse.

from the GNU version of the Collaborative International Dictionary of English

  • n. The plain semidome of an apse; sometimes used for the entire apse.
  • n. The external ear; esp. the largest and deepest concavity of the external ear, surrounding the entrance to the auditory canal.

from The Century Dictionary and Cyclopedia

  • n. In anatomy and zoology: The outer ear; the pinna of the ear; the auricle; especially, the shell of the ear, the hollowed part within the antihelix, leading into the meatus. See cut under car.
  • n. A shell of bone, or a bone like a shell; a turbinated bone.
  • n. Same as couch, 6.
  • n. [ML., ⟩ OF. conque.] An old dry measure of Gascony and Navarre, about 5 pecks, Winchester measure.
  • n. Same as conch, 10.
  • n. The thin, translucent shell of a bivalve mollusk, sometimes used for window-panes in the East Indies.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. (anatomy) a structure that resembles a shell in shape

Etymologies

Late Latin, semidome, from Latin, mussel shell; see conch.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Late Latin concha (Wiktionary)

Examples

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  • A Mexican sweet bread product imprinted with shell-like pattern, hence "concha," which is Spanish for "shell"

    October 6, 2010