flip-top

1. a brand name for a cigarette box having a hinged upper lid or cover.

adjective

2. (lowercase) pop-top(def 1).

noun

3. (lowercase) pop-top(defs 2, 3).

adjective

1. (of a can) having a top with a tab or ring that when pulled up or off exposes a precut hole or peels off the entire lid.

noun

2. Also pop top. a can having such a top: drinking beer from a pop-top.
3. the top itself.
4. the tab or ring fastener, especially when removed from such a can: a vest made entirely of pop-tops.