noun · small bits, crumbs, or filings of a material

锯木头的时候掉落了很多木屑。

verb · to deign to do something or consider something worth doing (usually in the negative)

他不屑于为自己辩解。

adjective · trifling, insignificant, or of little importance

你不用为这些琐屑的小事担心。