a pop, Slang. each; apiece: five orchids at $30 a pop. pop the question, Informal. to propose marriage: They dated for two years before he popped the question.
What does pop off mean slang?
Definition of 'pop off' If someone pops off, they say or write something very angrily or in a very emotional way. [US, informal] He's been popping off to the press. [ VERB PARTICLE]