<p><strong>noun</strong></p><ul><li>a first public appearance on a stage, on television, etc.</li><li>the first appearance of something, as a new product.</li><li>(of a young woman) a formal introduction and entrance into society, as at an annual ball.</li><li>the beginning of a profession, career, etc.</li></ul><p><strong>verb</strong></p><ul><li>(used without object) to make a debut, as in society or in a performing art: She decided to debut with several other violinists.</li><li>to appear for the first time, as on the market: A new product will debut next month.</li><li>(used with object) to perform (something) for the first time before an audience: He didn't know when the orchestra would debut his new symphony.</li><li>to place on the market for the first time; introduce.</li></ul><p><strong>adjective</strong></p><ul><li>of, relating to, or constituting a first appearance: a debut performance; a debut record album.</li></ul>