CALCAR
Etymology 1
Noun
calcar (plural calcars)
A small oven or furnace, used for the calcination of sand and potash, and converting them into frit.
Etymology 2
Noun
calcar (plural calcars)
(botany, anatomy) A spur-like projection.
Source: Wiktionary
Cal"car, n. Etym: [L. calcaria lime kiln, fr. calx, calcis, lime. See
Calx.] (Glass manuf.)
Definition: A kind of oven, or reverberatory furnace, used for the
calcination of sand and potash, and converting them into frit. Ure.
Cal"car, n.; L. pl. Calcaria. Etym: [L., a pur, as worn on the heel,
also the spur of a cock, fr. calx, calcis, the heel.]
1. (Bot.)
Definition: A hollow tube or spur at the base of a petal or corolla.
2. (Zoöl.)
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition