<p><strong>Noun</strong></p><ul><li>a small, polished, flat surface, usually in the shape of a polygon, such as one of the surfaces of a cut gem.</li><li>a smooth, flat surface cut on a fragment of rock by the action of water, windblown sand, etc.</li><li>aspect; phase: They carefully examined every facet of the argument.</li><li>Architecture: any of the faces of a column cut in a polygonal form.</li><li>Zoology: one of the corneal lenses of a compound arthropod eye.</li><li>Anatomy: a small, smooth, flat area on a hard surface, especially on a bone.</li><li>Dentistry: a small, highly burnished area, usually on the enamel surface of a tooth, produced by abrasion between opposing teeth in chewing.</li></ul><p><strong>Verb</strong></p><ul><li>to cut facets on.</li></ul>