bombazo
explosion
bomba
bomb
+
-azo
augmentative suffix
Bombazo means explosion and can be thought of as bomba0 (bomb0) + -azo1 (augmentative suffix1), implying a big or intense explosion.
noun
- explosionA powerful explosion or a shocking piece of newsLa noticia cayó como un bombazo en la reunión. // The news fell like a bombshell in the meeting.