铁证如山 tiězhèngrúshān irrefutable evidence Definitions Defs Origin Strokes Stroke Words Sentences Sents 铁证 鐵證 tiězhèng ironclad proof ironclad evidence or conclusive proof that is irrefutable and beyond doubt如 rú preposition to be like to be like; to be similar to; as if山 shān noun mountain mountain; hill; range
