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What is "umbra tree"

The Collaborative International Dictionary
Umbra tree

Umbra \Um"bra\, n.; pl. Umbr[ae]. [L., a shadow.]

  1. (Astron.)

    1. 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.

    2. The central dark portion, or nucleus, of a sun spot.

    3. The fainter part of a sun spot; -- now more commonly called penumbra.

  2. (Zo["o]l.) Any one of several species of sci[ae]noid food fishes of the genus Umbrina, especially the Mediterranean species ( Umbrina 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).