What does «umbra» mean in Spanish?

Shadow, darkness, lack of light.
In astronomy, the umbra is the innermost, darkest part of a shadow, where the light source is completely blocked by the occluded body. An observer in the umbra experiences a total eclipse.
In Zoology, a genus of teleost fishes native to Europe and North America, of which three species are known Umbra krameri (European damselfish, common in aquaria), Umbra limi and Umbra pygmaea.
In Antropología, lengua indígena de Colombia.