"a hit with a smart, explosive sound," c. 1400, of imitative origin. Meaning "effervescent carbonated beverage" is from 1812.
A new manufactory of a nectar, between soda-water and ginger-beer, and called pop, because 'pop goes the cork' when it is drawn. [Southey, letter, 1812]
Sense of "ice cream on a stick" is from 1923 (see popsicle). Meaning "the (brief) time of a 'pop'" is from 1530s. Pop goes the weasel, a country dance, was popular 1850s in school yards, with organ grinders, at court balls, etc.
"utmost limit to which one can go," Latin, literally "no more beyond;" the motto traditionally inscribed on the Pillars of Hercules.
1640s, from Late Latin iudicabilis "that can be judged," from iudicare "to judge," which is related to iudicem "a judge" (see judge (n.)).