calcar

英文释义

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