1. A firm in the publishing business; SYN. publishing house, publishing firm, publishing company.
2. A person engaged in publishing periodicals or books or music.
3. The proprietor of a newspaper.

A software application developed by Microsoft Corporation to help businesses create high-quality marketing and business material. A part of the Office product family, Publisher provides business users with design options for a variety of publications, such as newsletters, flyers, brochures, and Web pages.