when we say "For entertainment, she couldn’t go to the movies at $8 a pop", what "a pop" means?
closed as general reference by J.R., Mehper C. Palavuzlar, Matt Эллен, Andrew Leach, tchrist Aug 6 '12 at 12:09
This question is too basic; it can be definitively and permanently answered by a single link to a standard internet reference source designed specifically to find that type of information. See the FAQ for guidance on how to improve it.
The OED’s definition 3c of pop is ‘A turn at doing something; an attempt; a go; a time’ and the earliest citation supporting this sense is dated 1839.