cap cap /ˈkæp/

noun

1. () A tight-fitting headdress  ( cap )
   a tight-fitting headdress
    He wore a baseball cap to shield his face from the sun
   He wore a baseball cap to shield his face from the sun
   
   
2. () A top (as for a bottle)  ( cap )
   a top (as for a bottle)
    After taking a sip, he replaced the cap on the bottle.
   After taking a sip, he replaced the cap on the bottle.
   
   
3. () Something serving as a cover or protection  ( cap )
   something serving as a cover or protection
    She wore a cap to protect her head from the rain.
   She wore a cap to protect her head from the rain.
   
   
4. () A mechanical or electrical explosive device or a small amount of explosive; can be used to initiate the reaction of a disrupting explosive  ( detonating device , detonator , cap )
   a mechanical or electrical explosive device or a small amount of explosive; can be used to initiate the reaction of a disrupting explosive
   
5. The upper part of a column that supports the entablature  ( cap , capital , chapiter )
   the upper part of a column that supports the entablature
   
   
6. (dentistry) dental appliance consisting of an artificial crown for a broken or decayed tooth  ( cap , crown , crownwork , jacket , jacket crown )
   (dentistry) dental appliance consisting of an artificial crown for a broken or decayed tooth
    Tomorrow my dentist will fit me for a crown
   tomorrow my dentist will fit me for a crown
   
   
7. An upper limit on what is allowed  ( cap , roof , ceiling )
   an upper limit on what is allowed
    He put a ceiling on the number of women who worked for him
   he put a ceiling on the number of women who worked for him
    There was a roof on salaries
   there was a roof on salaries
    They established a cap for prices
   they established a cap for prices
   
8. A protective covering that is part of a plant  ( cap , hood )
   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  ( cap , pileus )
   a fruiting structure resembling an umbrella or a cone that forms the top of a stalked fleshy fungus such as a mushroom
   

verb

1. () Lie at the top of  ( crest , cap )
   lie at the top of
    Snow capped the mountains
   Snow capped the mountains
   
2. Restrict the number or amount of  ( cap )
   restrict the number or amount of
    We had to cap the number of people we can accept into our club
   We had to cap the number of people we can accept into our club