(pŏp′tŏp′)n.1. The tab of a container that can be pulled off to make an opening.2. A container having such a tab.adj. Having a tab that can be pulled up or off to make an opening in a container: pop-top beer cans.
pop′-top`
adj. (of a can) able to be opened by pulling the tab or ring on its top. [1965–70, Amer.]