Origin and history of bomb-proof

"explosive projectile," originally consisting of a hollow ball or shell filled with explosive material, 1580s, from French bombe, from Italian bomba, probably from Latin bombus "a deep, hollow noise; a buzzing or booming sound," from Greek bombos "deep and hollow sound," echoic. Thus probably so called for the sound it makes.

Originally of mortar shells, etc.; modern sense of "explosive device placed by hand or dropped from airplane" is from 1909. The meaning "old car" is from 1953. The meaning "success" is from 1954 (late 1990s slang the bomb "the best" probably is a fresh formation); opposite sense of "a failure" is from 1961. The bomb "the atomic bomb" is from 1945. Compare shell (n.).

c. 1200, preove "evidence and argumentation to establish the fact of (something) beyond reasonable doubt," from Anglo-French prove, preove, Old French proeve, prueve "proof, test, experience" (13c., Modern French preuve), from Late Latin proba "a proof," a back-formation from Latin probare "to prove" (see prove). "The devocalization of v to f ensued upon the loss of final e; cf. the relation of v and f in believe, belief, relieve, relief, behove, behoof, etc." [OED, 2nd ed., 1989].

The meaning "act of proving" is early 14c. The meaning "act of testing or making trial of anything" is from late 14c., from influence of prove. The meaning "standard of strength of distilled liquor" is from 1705, on the notion of "having been tested as to degree of strength." The use in photography is from 1855. The typographical sense of "trial impression to test type" is from c. 1600. The numismatic sense of "coin struck to test a die" is from 1762; now mostly in reference to coins struck from highly polished dies, mainly for collectors.

The expression the proof is in the pudding (1915) is a curious perversion of earlier proof of the pudding shall be in the eating (1708), with proof in the sense "quality of proving good or turning out well" (17c.).

word-forming element from proof (adj.) "impenetrable, able to resist" (as in proof against), which is recorded from 1590s, extended from proof (n.) in expressions such as proof of (mid-15c.).

Hence the extended senses involving "of tested power against" in compounds such as storm-proof (1590s), fireproof (1630s), rust-proof (1690s), bomb-proof (1702), waterproof (1725), fool-proof (1902), Milton's branching elm star-proof. A Donne sermon from 1631 has temptation-proof.

In later use often in advertisers' coinages, such as spill-proof, attested from 1909 in reference to carpet sweepers, by 1920 also in newspaper ads for garbage cans, clothes for boys, a dairy pail a cow can't kick over, etc. (It was used by 1902 of a wagon that won't upset.) Kiss-proof is touted as a quality of lipsticks by 1924, earliest of face-powder (1906); in 1890s it was an occasional whimsical word (as in kiss-proof mask, a gift for one suddenly popular). Also child-proof (1933). Shakespeare has shame-proof.