b 3 o 1 m 3 b 3 p 3 r 1 o 1 o 1 f 4
9 letters · 20 points in Scrabble
Meaning
noun a chamber (often underground) reinforced against bombing and provided with food and living facilities; used during air raids
verb make safe against bombings
adjective able to resist the explosive force of bombs and shells
originEtymology tree English bomb English -proof English bombproof From bomb + -proof.
Etymology from Wiktionary, CC BY-SA 3.0