Man definition, an adult male person, as distinguished from a boy or a woman. Slang. an expression of surprise, enthusiasm, dismay, or other strong feeling. ' Man like' is often used as a sort of exclamation upon greeting someone to This term has been passed down and is currently used as a slang term and the. Pages in category " Slang terms for men ". The following 28 pages are in this category, out of 28 total. This list may not reflect recent changes (learn more).