cap

What is the Definition of cap?

Noun:

1. a tight-fitting headdress
2. a top (as for a bottle)
3. a mechanical or electrical explosive device or a small amount of explosive; can be used to initiate the reaction of a disrupting explosive
4. something serving as a cover or protection
5. a fruiting structure resembling an umbrella or a cone that forms the top of a stalked fleshy fungus such as a mushroom
6. a protective covering that is part of a plant
7. an upper limit on what is allowed
8. (dentistry)
9. the upper part of a column that supports the entablature

Verb:

1. lie at the top of
2. restrict the number or amount of

Other meanings of cap (synonyms, cognates).