a knoblike projection at the rear of the breech of a muzzleloading cannon.
Origin: 1630–40; < Sp: little round bell, rattle < OPr cascavel, akin to ML *cascabellus, equiv. to VL *cascab(us) (var. of L caccabus pot) + L -ellus dim. suffix
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.]