popper

1. (fishing) A floating lure designed to splash when the fishing line is twitched.countableuncountable

2. (informal, countable) A capsule of amyl nitrite, a recreational drug used during sex.Examples: "If a person inhales a popper on the brink — the very brink — of climax, then the orgasm is much more powerful."; "Against all this was the counter-rhythm of the hip-flask and the drugs, that steady resorting at every pause for breath, to the swig of the secret drinker; or, high in his excitement, the burst of a popper and then the sucking sound of Cullen inhaling."; "Then, suddenly, Vince sagged — light-headed. Too many poppers."countableinformal

3. (informal, uncountable) Amyl nitrate.Examples: "Ryan knelt up in bed with his knees against Kick's side. "You okay?" Ryan asked. / "Too much popper," he said. “Maybe I have jet lag."; "Maybe he has some popper—that's a gay drug, right? Nicholas Nugent should at least have some popper . . . Art, leaning into the gaggle. Nicholas Nugent, shaking his pretty head. No popper. Do you think it's possible to popper yourself gay?"informaluncountable

4. (obsolete) A dagger.countableobsoleteuncountable