2. (Astron.) The shadow cast, in an eclipse, where the light
is partly, but not wholly, cut off by the intervening
body; the space of partial illumination between the umbra,
or perfect shadow, on all sides, and the full light. --Sir
I. Newton.
Note: The faint shade surrounding the dark central portion of
a solar spot is also called the {penumbra}, and
sometimes {umbra}.
3. (Paint.) The part of a picture where the shade
imperceptibly blends with the light.
2. (Zo["o]l.) Any one of several species of sci[ae]noid 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).