Calcar



ENGLISH MEANING
noun
1.
A kind of oven, or reverberatory furnace, used for the calcination of sand and potash, and converting them into frit.
2.
A hollow tube or spur at the base of a petal or corolla.
3.
A slender bony process from the ankle joint of bats, which helps to support the posterior part of the web, in flight.
4.
A spur, or spurlike prominence.
5.
A curved ridge in the floor of the leteral ventricle of the brain; the calcar avis, hippocampus minor, or ergot.