A pop

[pop] /pɒp/
verb (used without object), popped, popping.
to make a short, quick, explosive sound:
the cork popped.
to burst open with such a sound, as chestnuts or corn in roasting.
to come or go quickly, suddenly, or unexpectedly:
she popped into the kitchen to check the stove.
to shoot with a firearm:
to pop at a mark.
to protrude from the sockets:
the news made her eyes pop.
baseball.

to hit a pop fly (often followed by up).
to pop out.

verb (used with object), popped, popping.
to cause to make a sudden, explosive sound.
to cause to burst open with such a sound.
to open suddenly or violently:
to pop the hood on a car; to pop the tab on a beer can.
to put or thrust quickly, suddenly, or unexpectedly:
he popped the m-ffins into the oven.
informal. to cause to fire; discharge:
he popped his rifle at the bird.
to shoot (usually followed by at, off, etc.):
he popped off bottles with a slingshot.
british slang. to p-wn.
informal.

to take or swallow (pills), especially in excess or habitually; take orally in a compulsive or addictive way:
popping all those pills will land him in the hospital.
to eat in a continual or thoughtless manner, as snack foods:
popping peanuts at the movies.

noun
a short, quick, explosive sound.
a popping.
a shot with a firearm.
informal. soda pop.
a drink or portion of an alcoholic beverage, as a drink of whiskey or a gl-ss of beer:
we had a couple of pops on the way home.
baseball. pop fly.
adverb
with an explosive sound:
the balloon went pop.
quickly, suddenly, or unexpectedly:
pop, the door flew open!
adjective
informal. unexpected; without prior warning or announcement:
the teacher gave us a pop quiz.
verb phrases
pop for, slang. to pay or buy for oneself or another, especially as a gift or treat; spring for:
i’ll pop for the first round of drinks.
pop off, informal.

to die, especially suddenly.
to depart, especially abruptly.
to express oneself volubly or excitedly and sometimes irately or indiscreetly:
he popped off about the injustice of the verdict.

pop out, baseball. to be put out by hitting a pop fly caught on the fly by a player on the opposing team.
pop up, baseball. to hit a pop fly.
idioms
a pop, slang. each; apiece:
five orchids at $30 a pop.
pop in, informal. to visit briefly and unexpectedly; stop in; drop by:
maybe we’ll pop in after the movie.
pop the question, informal. to propose marriage:
they dated for two years before he popped the question.
synonyms
regional variation note
pop1
/pɒp/
verb pops, popping, popped
to make or cause to make a light sharp explosive sound
to burst open or cause to burst open with such a sound
(intransitive; often foll by in, out, etc) (informal) to come (to) or go (from) rapidly or suddenly; to pay a brief or unexpected visit (to)
(intransitive) (esp of the eyes) to protrude: her eyes popped with amazement
to shoot or fire at (a target) with a firearm
(transitive) to place or put with a sudden movement: she popped some tablets into her mouth
(transitive) (informal) to p-wn: he popped his watch yesterday
(transitive) (slang) to take (a drug) in pill form or as an injection: pill popping
pop one’s clogs, see clog1 (sense 9)
(informal) pop the question, to propose marriage
noun
a light sharp explosive sound; crack
(informal) a flavoured nonalcoholic carbonated beverage
(informal) a try; attempt: have a pop at goal
(informal) an instance of criticism: townsend has had a pop at modern bands
(informal) a pop, each: 30 million shares at 7 dollars a pop
adverb
with a popping sound
interjection
an exclamation denoting a sharp explosive sound
see also pop off, pop-up
word origin
c14: of imitative origin
pop2
/pɒp/
noun

music of general appeal, esp among young people, that originated as a distinctive genre in the 1950s. it is generally characterized by a strong rhythmic element and the use of electrical amplification
(as modifier): pop music, a pop record, a pop group

(informal) a piece of popular or light cl-ssical music
adjective
(informal) short for popular
pop