Definition of facet

• n. - A little face; a small, plane surface; as, the facets of a diamond.
• n. - A smooth circumscribed surface; as, the articular facet of a bone.
• n. - The narrow plane surface between flutings of a column.
• n. - One of the numerous small eyes which make up the compound eyes of insects and crustaceans.
• v. t. - To cut facets or small faces upon; as, to facet a diamond.