<p><strong>Noun</strong></p><ul><li>a close-fitting covering for the head, usually of soft supple material and having no visor or brim.</li><li>a brimless head covering with a visor, such as a baseball cap.</li><li>a head covering that denotes rank, occupation, religious order, or the like: a nurse's cap.</li><li>anything that resembles or suggests a covering for the head in shape, use, or position: Please replace the cap on the toothpaste tube when finished using it.</li><li>a maximum limit, such as one that is set by law or agreement on prices, wages, spending, etc., during a certain period of time; ceiling: We've had to set a 3 percent cap on pay increases for this year.</li><li>Mycology: the pileus, or horizontal portion, of a mushroom.</li><li>Botany: calyptra.</li><li>Mathematics: the symbol ∩, used to indicate the intersection of two sets.</li><li>Mining: a short, horizontal beam at the top of a prop for supporting part of a roof.</li><li>a percussion cap.</li><li>a noise-making device for toy pistols that is made of a small quantity of explosive wrapped in paper or other thin material.</li><li>Chiefly British Sports: an instance of playing in an international game or match as part of a national team: The 17-year-old has already got her first cap for Wales.</li><li>Slang: lying talk; exaggeration: No way did you get two grand for that old wreck of a car—that’s cap.</li></ul><p><strong>Verb (used with object)</strong></p><ul><li>to close or cover with or as if with a cap: Cap the jug of bleach tightly after each use.</li><li>to complete: We capped our dinner with a shared slice of chocolate cake.</li><li>to follow up with something as good or better; surpass; outdo: to cap one joke with another.</li><li>to put a maximum limit on (prices, wages, spending, etc.): We’ve capped the contractor’s hours at 75 per month.</li></ul><p><strong>Verb (used without object)</strong></p><ul><li>to lie or exaggerate: Don't cap—no way that's your car.</li><li>Chiefly British Sports: to play in an international game or match as part of a national team: She capped for England twice.</li></ul>