calyptra
n. கிரேக்க முகமூடி, பாசி மேலுறை, வேரின் நுனியுறை.
Ca*lyp"tra, n. Etym: [NL., fr. Gr. (Bot.) Defn: A little hood or veil, resembling an extinguisher in form and position, covering each of the small flaskike capsules which contain the spores of mosses; also, any similar covering body.