- fireproof⇄adj. 1. that will not burn, or will not burn easily.
Ex. Asbestos is fireproof.
(SYN) incombustible.
2. that is relatively hard to set fire to; not easily destroyed by fire.
Ex. A building made entirely of steel and concrete is - fireproof⇄fireproof, adjective, verb.
- fireproof⇄v.t. to make so that it will not burn, or not burn easily.
Ex. to fireproof a theater curtain.