"an attack with bombs," 1610s, verbal noun from bomb (v.).
Entries linking to bombing
bomb v.
1680s, "fire bombs at, attack with bombs" (marked archaic in Century Dictionary, 1889, but quite revived in 20c.), from bomb (n.). The slang meaning "fail" is attested from 1963; that of "move or travel quickly" is from 1966. Related: Bombed; bombing. Slang bombed "drunk" is attested by 1956.