calcar

Noun

cal=car

CIDE DICTIONARY

calcar, n. [L. calcaria lime kiln, fr. calx, calcis, lime. See Calx.].

A kind of oven, or reverberatory furnace, used for the calcination of sand and potash, and converting them into frit. Ure. [1913 Webster]

calcar, n. [L., a spur, as worn on the heel, also the spur of a cock, fr. calx, calcis, the heel.].

A hollow tube or spur at the base of a petal or corolla. [1913 Webster]
A slender bony process from the ankle joint of bats, which helps to support the posterior part of the web, in flight. [1913 Webster]
A spur, or spurlike prominence. [1913 Webster]

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