In its literal French definition, bijou translates directly to a jewel, trinket, or piece of fine jewelry. Beyond its primary dictionary meaning, the term is frequently adopted in global interior design, real estate, and fashion to describe something small, elegant, highly polished, and visually delightful—such as a cozy, beautifully decorated apartment described as a "bijou residence." In colloquial French slang, it can also express endearment toward someone precious.