金かな錆さびMeanings1nounrustSpecifically refers to rust on metal, often iron or steel. The kanji 金 (metal) and 錆 (rust) make the meaning clear.古ふるい鉄てつの門もんに金かな錆さびが浮ういていた。Rust had formed on the old iron gate.金かな錆さびを落おとすために研けん磨ま剤ざいを使つかった。I used an abrasive to remove the rust.