- Bot. a hollow projection or nectar spur, as at the base of a corolla
- Ornithology a spur on a bird's wing or leg
Origin of calcarL, a spur from calx (gen. calcis), the heel: for Indo-European base see scolex
A spur or spurlike projection, such as one found on the base of a petal or on the wing or leg of a bird.
Origin of calcarLatin spur from calx calc- heel
A furnace formerly used in glassmaking for calcination of materials into frit.
Origin of calcarItalian calcara from Late Latin calcāria (fornāx) lime(-kiln) from Latin feminine of calcārius of lime ; see calcareous .
From the Italian calcara (“lime-kiln”).
- (botany, anatomy) A spur-like projection.
OriginSee also: calçar
From the Latin calcar (“spur”).