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Definition of cap
(Entry 1 of 6)
1a : a head covering especially with a visor and no brim
b : a distinctive head covering emblematic of a position or office: such as
(1) : a cardinal's biretta
(2) : mortarboard
2 : a natural cover or top: such as
a : an overlying rock layer that is usually hard to penetrate
c : the top of a bird's head or a patch of distinctively colored feathers in this area
3a : something that serves as a cover or protection especially for a tip, knob, or end a bottle cap
b : a fitting for closing the end of a tube
c British : cervical cap
d : an artificial crown for a tooth
4 : an overlaying or covering structure
5 : a paper or metal container holding an explosive charge (as for a toy pistol)
6 : an upper limit (as on expenditures) : ceiling a cap on military spending
7 : the symbol ∩ indicating the intersection of two sets — compare cup sense 9
8 : a cluster of molecules or chemical groups bound to one end or a region of a cell, virus, or molecule
: in a respectful, humble, or sometimes fearful manner went cap in hand to the governor to seek more funds for education
cap
verbDefinition of cap (Entry 2 of 6)
1a : to provide or protect with a cap cap a bottle
b : to give a cap to as a symbol of honor, rank, or achievement
2 : to form a cap over : crown mountains capped with mist
3a : to follow with something more noticeable or more significant : outdo
b : to bring to a climax or conclusion cap off the show with a song
4 : to form a chemical cap on
5 : to prevent from growing or spreading : set an upper limit on cap oil prices
6 : to supply (a tooth) with an artificial crown
: to form or produce a chemical cap
cap
noun (2)Definition of cap (Entry 3 of 6)
: a small amount of an illegal or legally regulated drug especially : a small amount of a drug enclosed in a capsule a cap of cocaine
cap
noun (3)Definition of cap (Entry 4 of 6)
cap
abbreviation (1)Definition of cap (Entry 5 of 6)
1 capacity
2 capital
3 capitalize; capitalized
CAP
abbreviation (2)Definition of CAP (Entry 6 of 6)
1 Civil Air Patrol
2 combat air patrol
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Synonyms & Antonyms for cap
Synonyms: Verb
circumscribe, confine, hold down, limit, restrict
Antonyms: Verb
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Examples of cap in a Sentence
Verb
a pipe capped at one end Be sure to cap the pen when you are done using it. The report caps a ten-year study of lung cancer among nonsmokers. a concert capped by a fantastic fireworks display If the teams don't cap player salaries, the league won't survive. The law would cap legal immigration. The government wants to cap councils that spend too much.
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More Definitions for cap
cap
verbEnglish Language Learners Definition of cap
: to cover the top or end of (something) : to put a cap on (something)
: to end (something) in usually an exciting or impressive way
: to follow (something) with something that is better, worse, etc.
See the full definition for cap in the English Language Learners Dictionary
cap
noun
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Kids Definition of cap
(Entry 1 of 3)
1 : a head covering and especially one having a visor and no brim
2 : something that serves as a cover or protection for something a bottle cap
3 : a part that forms the top of something a mushroom cap
4 : an upper limit a cap on spending
5 : a paper or metal container holding a small explosive charge The toy pistol shoots caps.
cap
verbKids Definition of cap (Entry 2 of 3)
1 : to cover or provide with a top or cover Please remember to cap the marker. The mountaintops are capped with snow.
2 : to bring to a high point or end He capped off the show with a song.
3 : to match or follow with something equal or better She capped his joke with one of her own.
4 : to put an upper limit on Attendance is capped at 80 participants.
cap.
abbreviationKids Definition of cap.
1 capital
2 capitalize
3 capitalized
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Medical Definition of cap
(Entry 1 of 3)
2 : something that serves as a cover or protection especially for a tip, knob, or end (as of a tooth)
3 British : cervical cap
4 : a cluster of molecules or chemical groups bound to one end or a region of a cell, virus, or molecule the cell surface receptors were redistributed into caps
cap
verbMedical Definition of cap (Entry 2 of 3)
1 : to invest (a student nurse) with a cap as an indication of completion of a probationary period of study
2 : to cover (a diseased or exposed part of a tooth) with a protective substance
3 : to form a chemical cap on the capped end of a messenger RNA
: to form or produce a chemical cap
cap
abbreviationMedical Definition of cap (Entry 3 of 3)
1 capacity
2 capsule
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cap
noun
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Legal Definition of cap
: an upper limit a jury found that KAL had committed “willful misconduct,” thus removing the Warsaw Conventionʼs $75,000 cap on damages — Dooley v. Korean Air Lines, 524 U.S. 116 (1998)
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