umbra \UHM-bruh\, noun:
1. The invariable or characteristic accompaniment or companion of a person or thing.
2. Shade; shadow.
3. In astronomy, the complete shadow of an opaque body, as a planet, where the direct light from the source of illumination is completely cut off.
4. A phantom or shadowy apparition, as of someone or something not physically present; ghost; spectral image.
2. Shade; shadow.
3. In astronomy, the complete shadow of an opaque body, as a planet, where the direct light from the source of illumination is completely cut off.
4. A phantom or shadowy apparition, as of someone or something not physically present; ghost; spectral image.
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