<p><strong>Noun</strong></p><ul><li>(Plural) um·bras, um·brae<ul><li>Shade; shadow.</li><li>The invariable or characteristic accompaniment or companion of a person or thing.</li><li>Astronomy: The complete or perfect shadow of an opaque body, as a planet, where the direct light from the source of illumination is completely cut off.</li><li>The dark central portion of a sunspot.</li><li>A phantom or shadowy apparition, as of someone or something not physically present; ghost; spectral image.</li></ul></li></ul>