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"pop" is also used as a crossword clue. If that's what you saw, the answer is often dad (3 letters).
Definitions
burst open with a sharp, explosive sound
Word origin
From Middle English pop, poppe (“a blow; strike; buffet”) (> Middle English poppen (“to strike; thrust”, verb)), of onomatopoeic origin – used to describe the sound, or short, sharp actions. The physics sense is part of a facetious sequence "snap, crackle, pop", after the mascots of Rice Krispies cereal.
Used in a sentence
“Listen to the pop of a champagne cork.”
“Lunch was sandwiches and a bottle of pop.”
“You have not taken anything off "pop" yet, and "pop" is the working-class drink. For the working-classes it is "pop" and cockles, just as with the upper classes it is champagne and oysters.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer5 curated clues
01“Fizzy drink”3 letters
02“Burst sound”3 letters
03“Soda, in some regions”3 letters
04“Soda, informally”3 letters
05“Dad, informal”3 letters
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