Popper meaning : One who or that which pops. A dagger. A short piece of twisted string tied to the end of a whip that creates the distinctive sound when the whip is thrown or cracked. A capsule of amyl nitrite for recreational use as a sexual stimulant. A floating lure designed to splash when the fishing line is twitched. Either of a pair of interlocking discs commonly used in place of buttons to fasten clothing, a snap fastener. A device that pops kernels of corn to produce popcorn. A stuffed and usually breaded jalapeño. A looner (balloon fetishist) who prefers to burst balloons.