A round chili pepper used in Mexican cuisine, or historically a type of cannon with a knob at the rear.
Spanish cascabel means 'rattle' or 'bell' (from cascar 'to crack' + bel 'bell'), referring to the rattling seeds inside the dried pepper.
The same word names both a pepper and a cannon part—the cannon's knob looks like it could rattle, which is how the word bridged two totally different fields!
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