mass noun
1
- a reddish- or yellowish-brown flaking coating of iron oxide that is formed on iron or steel by oxidation, especially in the presence of moisture锈; 铁锈。
1.1
- figurative a state of deterioration or disrepair resulting from neglect or lack of use〈喻〉（因疏忽或不用而导致的）衰退状态, 退化; 迟钝; 荒废, 荒疏：
the MPs are here to scrape the rust off the derelict machinery of government.
国会议员现时的职责是刮掉闲置不用的政府机器上的锈斑。
2
- usu. with adj. or noun modifier a fungal disease of plants which results in reddish or brownish patches锈病。
2.1
- The fungi belong to Puccinia and other genera, order Uredinales, class Teliomycetes.此真菌属于柄锈菌属及其他属, 锈菌目, 冬孢菌纲。
3
- a reddish-brown colour铁锈色, 赭色：
in combination his rust-coloured hair.他的铁锈色的头发。
no obj.
1- be affected with rust生锈：
the blades had rusted away
刀刃锈烂了
as adj. rusting rusting machinery.生锈的机器。
1.1
- figurative deteriorate through neglect or lack of use〈喻〉（因疏忽或不用而）衰退; 变迟钝; 荒废, 荒疏。
派生词
rustless
adjective词源
Old English rūst, of Germanic origin; related to Dutch roest, German Rost, also to RED.