Căl'car, n.

n. [Lat. calcaria, lime-kiln, from calcari-us, from calx, lime. See CALX.] 1. (Glass Manuf.) A kind of oven, or reverberatory furnace, used for the calcination of sand and potash, and converting them into frit. Ure. 2. (Bot.) A hollow tube into which a petal is lengthened at the base; a spur. Lindley.