umbra

n. உருநிழல், நிழலிடம், நிழலுரு, ஆவியுரு, பேயுரு, ஒட்டு விருந்தினர், (வான்.) கோள் மறைப்பில் செறிநிழற் கூறு, (வான.) கதிரவன் கறைப்பொடடின் கருமையம்.

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Um"bra, n.; pl. Umbræ. Etym: [L., a shadow.] 1. (Astron.) (a) The conical shadow projected from a planet or satellite, on the side opposite to the sun, within which a spectator could see no portion of the sun's disk; -- used in contradistinction from penumbra. See Penumbra. (b) The central dark portion, or nucleus, of a sun spot. (c) The fainter part of a sun spot; -- now more commonly called penumbra. 2. (Zoöl.) Defn: Any one of several species of sciænoid food fishes of the genus Umbrina, especially the Mediterranean species (U. cirrhosa), which is highly esteemed as a market fish; -- called also ombre, and umbrine. Umbra tree (Bot.), a tree (Phytolacca diocia) of the same genus as pokeweed. It is native of South America, but is now grown in southern Europe. It has large dark leaves, and a somber aspect. The juice of its berries is used for coloring wine. J. Smith (Dict. Econ. Plants).

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