Shirabe

ぬか

Noun place name family or surname
English jmdict
1
noun (common) (futsuumeishi) rice bran
彼に何をアドバイスしても糠に釘。もう止めた止めた。
Forget it. There's no sense giving him advice.
English jmnedict
1
Nuka

糠に釘ぬかにくぎ

Expression Noun
English jmdict
1
expressions (phrasesnoun (common) (futsuumeishi) idiomatic expression having no effect;waste of effort
Other forms ぬかに釘 【ぬかにくぎ】