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

  • n. A spur or spurlike projection, such as one found on the base of a petal or on the wing or leg of a bird.
  • n. A furnace formerly used in glassmaking for calcination of materials into frit.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A small oven or furnace.
  • n. A spur-like projection.

from the GNU version of the Collaborative International Dictionary of English

  • n. A kind of oven, or reverberatory furnace, used for the calcination of sand and potash, and converting them into frit.
  • n. A hollow tube or spur at the base of a petal or corolla.
  • n. A slender bony process from the ankle joint of bats, which helps to support the posterior part of the web, in flight.
  • n.
  • n. A spur, or spurlike prominence.
  • n. A curved ridge in the floor of the leteral ventricle of the brain; the calcar avis, hippocampus minor, or ergot.

from The Century Dictionary and Cyclopedia

  • n. In botany, a spur; a hollow projection from the base of a petal or sepal; the nectary (nectarium) of Linnæus.
  • n. In anatomy, a projection into the posterior horn of the lateral ventricle of the brain of man and some other mammals; the calcar avis or hippocampus minor.
  • n. In ornithology, a spur.
  • n. In Rotifera, a spur-like setigerous process more or less closely attached to the single ganglion of these animals, near the trochal disk.
  • n. In Chiroptera, a slender elongated bone or cartilage upon the inner side of the ankle-joint, assisting in the support of the patagium.
  • n. [capitalized] [NL.] In entomology, a genus of atracheliate beetles, of the family Tenebrionidæ.
  • n. [capitalized] [NL.] In conchology, a genus of mollusks.
  • n. The spur forming part of any ceremonial costume.
  • n. In glass-works, an oven or furnace for calcining the materials of frit, prior to melting. Also called fritting-furnace.
  • n. In metallurgy, an annealing-arch or -oven.
  • n. In entomology, one of the spines at the tips of the tibiæ of certain insects, especially the Hymenoptera. Also called spur.


Latin, spur, from calx, calc-, heel.
Italian calcara, from Late Latin calcāria (fornāx), lime(-kiln), from Latin, feminine of calcārius, of lime; see calcareous.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From the Italian calcara ("lime-kiln"). (Wiktionary)
From the Latin calcar ("spur"). (Wiktionary)



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  • A spur or spurlike projection, such as one found on the base of a petal or on the wing or leg of a bird.

    August 12, 2008