trueno
/ˈtɾweno/ · B2 · noun · m
boom
⚡🥁 trueno = tru-ENO: a TRUE ENOrmous boom from the sky
Sounds like true + eno, so read it as a true, enormous boom. Spanish trueno comes from Latin tonitrus, thunder, related to English tonight-free words like tone and detonate, which share the booming-sound root ton-.