Search and compare thousands of words and phrases in American Sign Language (ASL). The largest collection online.
How to sign: not penetrable by bullets
"bulletproof glass"; "bulletproof vest";
How to sign: without flaws or loopholes
"an ironclad contract"; "a watertight alibi"; "a bulletproof argument";
Similiar / Same: ironclad, unshakable, unassailable, watertight
