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Entry 4 senses · 2 variants Webster, 1913

Calcar

· Cal·car · IPA
01 n. A kind of oven, or reverberatory furnace, used for the calcination of sand and potash, and converting them into frit.
  1. 1.
    A kind of oven, or reverberatory furnace, used for the calcination of sand and potash, and converting them into frit.(Glass manuf.)
02 n. A hollow tube or spur at the base of a petal or corolla.
pl. Calcaria ((#))
  1. 1.
    A hollow tube or spur at the base of a petal or corolla.(Bot.)
  2. 2.
    A slender bony process from the ankle joint of bats, which helps to support the posterior part of the web, in flight.(Zool.)
  3. 3.
    A spur, or spurlike prominence.(Anat.)