cap

nouns

a tight-fitting headdress
cap
is a type of (narrower)
clothing for the head
headdress, headgear
a top (as for a bottle)
cap
is a type of (narrower)
covering for a hole (especially a hole in the top of a container)
"he removed the top of the carton"; "he couldn't get the top off of the bottle"; "put the cover back on the kettle"
cover, top
a mechanical or electrical explosive device or a small amount of explosive; can be used to initiate the reaction of a disrupting explosive
cap, detonating device, detonator
something serving as a cover or protection
cap
is a type of (narrower)
a covering that is intend to protect from damage or injury
"they had no protection from the fallout"; "wax provided protection for the floors"
protection, protective cover, protective covering
a fruiting structure resembling an umbrella or a cone that forms the top of a stalked fleshy fungus such as a mushroom
cap, pileus
a protective covering that is part of a plant
cap, hood
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"
cap, ceiling, roof
(dentistry) dental appliance consisting of an artificial crown for a broken or decayed tooth
"tomorrow my dentist will fit me for a crown"
cap, crown, crownwork, jacket, jacket crown
the upper part of a column that supports the entablature
cap, capital, chapiter

verbs

lie at the top of
"Snow capped the mountains"
cap, crest
restrict the number or amount of
"We had to cap the number of people we can accept into our club"
cap
is a type of (narrower)
restrict or confine, "I limit you to two visits to the pub a day"
circumscribe, confine, limit