朽 (xiǔ) — rotten, decayed; decrepit, senile (of people); immortal, enduring (in 不朽)

Definition

Examples

• 这块木头已经腐朽了，不能用了。
  Zhè kuài mù tou yǐ jīng fǔ xiǔ le, bù néng yòng le.
  This piece of wood has already rotted and can't be used.
• 他虽然年事已高，但身体并不老朽。
  Tā suī rán nián shì yǐ gāo, dàn shēn tǐ bìng bù lǎo xiǔ.
  Although he is advanced in years, his body is not decrepit.
• 英雄的事迹永垂不朽。
  Yīng xióng de shì jì yǒng chuí bù xiǔ.
  The deeds of heroes will be forever immortal.