trompeta
/tɾomˈpeta/ · B2 · noun · f
cornet
🎺 trompeta = trompa (horn) + -eta (little): a little horn
Spanish trompa means horn or trunk, and the suffix -eta makes it a small version. So trompeta is the little horn you blow into. It sounds like trumpet because both come from the same Germanic and Romance horn word. The slang sense, penis, comes from the shared long, tube-like shape.