Read the dictionary definition of cap. All definitions for this word.
1. a tight-fitting headdress
2. a top (as for a bottle)
3. something serving as a cover or protection
4. the upper part of a column that supports the entablature
5. (dentistry) dental appliance consisting of an artificial crown for a broken or decayed tooth
1. tomorrow my dentist will fit me for a crown
6. a mechanical or electrical explosive device or a small amount of explosive; can be used to initiate the reaction of a disrupting explosive
7. an upper limit on what is allowed
1. he put a ceiling on the number of women who worked for him
2. there was a roof on salaries
3. they established a cap for prices
8. a protective covering that is part of a plant
9. a fruiting structure resembling an umbrella or a cone that forms the top of a stalked fleshy fungus such as a mushroom
10. restrict the number or amount of
1. We had to cap the number of people we can accept into our club
11. lie at the top of
1. Snow capped the mountains