生锈

生鏽
shēngxiù
  1. (of metal) to rust; to become rusty
  2. (fig.) (of a skill etc) to get rusty; to deteriorate

CEDICT

to rust; to get rusty; to corrode; to oxidise

Wiktionary

Examples

你的刀生鏽了。

Your knife is rusty.

Source: Tatoeba

萨米将生鏽的叉子放进了洗碗机。

Sami put the rusty fork in the dishwasher.

Source: Tatoeba

Entry Composition

1 生 shēng
  1. to be born
  2. to give birth
  3. life
  4. to grow
  5. raw
  6. uncooked
  7. student
=2 锈 xiù variant of 锈 xiù
=2 锈 xiù to rust

Containing this entry

刀不磨要生锈，人不学要落后 dāobùmóyàoshēngxiù,rénbùxuéyàoluòhòu (proverb) a blade will get rusty if it is not sharpened; a man will fall behind if he doesn't study
永不生锈的螺丝钉 yǒngbùshēngxiùdeluósīdīng a "screw that never rusts" – metaphor used in CCP propaganda to praise loyal, selfless contributors, famously applied to model worker Lei Feng 雷锋 Léi Fēng