| 单词 | rust |
| 释义 | rust n. & v. --n 1. a a reddish or yellowish-brown coating formed on iron or steel by oxidation, esp. as a result of moisture. b a similar coating on other metals. 2. a any of various plant-diseases with rust-coloured spots caused by fungi of the order Uredinales. b the fungus causing this. 3. an impaired state due to disuse or inactivity. --v 1. tr. & intr. affect or be affected with rust; undergo oxidation. 2. intr. (of bracken etc.) become rust-coloured. 3. intr. (of a plant) be attacked by rust. 4. intr. lose quality or efficiency by disuse or inactivity. Derivatives rustless adj. Etymology: OE rust f. Gmc |
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