cas·ca·bel 
(kăskə-bĕl′)
(kăskə-bĕl′)n.
1. A small, round, medium-hot dried chili.
2. A rounded projection behind the breech of a muzzleloading cannon.
[Spanish, bell, rattle, from Old Provençal cascavel, from Vulgar Latin *cascābellus, probably from *quassicāre, to rattle, crack, from Latin quassāre, to shatter; see SQUASH2. Sense 1, from the sound of the loose seeds in the dried fruit.]