umbra tree

1 definition found

umbra tree - Collaborative International Dictionary of English v.0.48 :

  Umbra \Um"bra\, n.; pl. Umbrae. [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.
            [1913 Webster]
  
     2. (Zool.) Any one of several species of sciaenoid 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.
        [1913 Webster]
  
     Umbra tree (Bot.), a tree (Phytolacca dioica) 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).
        [1913 Webster]