noun

• (countable) A loud, sharp sound, as of a cork coming out of a bottle, especially when the contents are pressurized by fizziness.
  "Listen to the pop of a champagne cork."
• (uncountable, regional, Midwestern US, Canada, Inland Northern American, Midlands, Northwestern US, Western Pennsylvania, Northern England) An effervescent or fizzy drink, most frequently nonalcoholic; soda pop.
  "Lunch was sandwiches and a bottle of pop."
• (countable, regional, Midwestern US, Inland Northern American, Northwestern US, Canada, Western Pennsylvania) A bottle, can, or serving of effervescent or fizzy drink, most frequently nonalcoholic; a soda pop.
  "Go in the store and buy us three pops."
• (colloquial, in the phrase "a pop") A quantity dispensed; a portion; apiece.
  "They cost 50 pence a pop."

verb

• (intransitive) To make a pop, or sharp, quick sound.
  "The muskets popped away on all sides."
• (ergative) To burst (something) with a popping sound.
  "The boy with the pin popped the balloon."
• (intransitive, with in, out, upon, etc.) To enter, or issue forth, with a quick, sudden movement; to move from place to place suddenly; to dart.
  "A rabbit popped out of the hole."
• (transitive, UK, Australia) To place (something) (somewhere); to move or position (something) with a short movement.
  "Just pop it in the fridge for now."

noun

• (colloquial, endearing) One's father.
  "My pop used to tell me to do my homework every night."

adj

• (used attributively in set phrases) Popular.