calcar

< /kælˈkɛər i ə/. Glassmaking.

1. a reverberatory furnace for preparing frit.

noun plural calcaria (kælˈkɛərɪə)

1. a spur or spurlike process, as on the leg of a bird or the corolla of a flower

n. pl. cal•car•i•a (kăl-kâr′ē-ə)

1. A small spurlike projection from a structure.
2. An internal septum at the level of division of arteries and confluence of veins when branches or roots form an acute angle.
3. A dull spine or projection from a bone.
4. A horny outgrowth from the skin.

1. A spur or spurlike projection, such as one found on the base of a petal or on the wing or leg of a bird.