calcar
  熔塊窯
  cal·car /ˈkælˌkɑr/ 名詞
  (複calcaria)距,禽距
  Cal·car n.  Glass manuf. A kind of oven, or reverberatory furnace, used for the calcination of sand and potash, and converting them into frit.
  Cal·car, n.; L. pl. Calcaria
  1. Bot. A hollow tube or spur at the base of a petal or corolla.
  2. Zool. A slender bony process from the ankle joint of bats, which helps to support the posterior part of the web, in flight.
  3. Anat. (a) A spur, or spurlike prominence. (b) A curved ridge in the floor of the leteral ventricle of the brain; the calcar avis, hippocampus minor, or ergot.
  ◄ ►