cap

a tight-fitting headdress

a top (as for a bottle)

a mechanical or electrical explosive device or a small amount of explosive; can be used to initiate the reaction of a disrupting explosive

something serving as a cover or protection

a fruiting structure resembling an umbrella or a cone that forms the top of a stalked fleshy fungus such as a mushroom

a protective covering that is part of a plant

an upper limit on what is allowed; "he put a ceiling on the number of women who worked for him"; "there was a roof on salaries"; "they established a cap for prices"

(dentistry) dental appliance consisting of an artificial crown for a broken or decayed tooth; "tomorrow my dentist will fit me for a crown"

the upper part of a column that supports the entablature

lie at the top of; "Snow capped the mountains"

restrict the number or amount of; "We had to cap the number of people we can accept into our club"