cascabel
noun
cas·ca·bel ˈka-skə-ˌbel 
1
: a projection behind the breech of a muzzle-loading cannon
2
: a small hollow perforated spherical bell enclosing a loose pellet
3
: a small, rounded, moderately pungent chili pepper that is usually used dried when it has a translucent, dark red skin and loose seeds which rattle
Example Sentences
Recent Examples on the Web And what of other chile varieties such as guajillo, cascabel and morita? 
New York Times, 11 Nov. 2021 Meanwhile, heat a medium skillet over medium heat and add the cascabel chiles; cook, turning occasionally, until the chiles turn bright red and charred in places, 1 to 2 minutes total. Tara Duggan, SFChronicle.com, 30 Oct. 2020 For $44 a person, opt for ribeye steak with shrimp, roasted corn and mushrooms in a smoky cascabel sauce. Lauren Saria, The Arizona Republic, 17 Sep. 2020
New York Times, 11 Nov. 2021 Meanwhile, heat a medium skillet over medium heat and add the cascabel chiles; cook, turning occasionally, until the chiles turn bright red and charred in places, 1 to 2 minutes total. Tara Duggan, SFChronicle.com, 30 Oct. 2020 For $44 a person, opt for ribeye steak with shrimp, roasted corn and mushrooms in a smoky cascabel sauce. Lauren Saria, The Arizona Republic, 17 Sep. 2020 Word History
Etymology
Spanish, literally, small bell
First Known Use
1639, in the meaning defined at sense 1