| smoking gun | (n) indisputable evidence (especially of a crime) |
| smoking gun | n. [ metaphorical ] [ from imagined situations where a person holding a pistol, still smoking from having been fired, is found standing over a dead person ] Incontrovertible evidence; convincing evidence. [ PJC ] |
| entscheidender Beweis | smoking gun [ Am. ] [Add to Longdo] |