Refers to organic material used to enrich soil, including animal dung and historically night soil. Used in agricultural and gardening contexts.
I spread cow manure on the field.
化学肥料より肥やしのほうが土にいい。
Manure is better for the soil than chemical fertilizer.
something that helps one grow; nourishment for development
Figurative use: an experience, hardship, or knowledge that serves as 'fertilizer' for personal growth. Often used in the phrase 肥やしになる.
失敗も人生の肥やしになる。
Failures can also become nourishment for life.
読書は心の肥やしだ。
Reading is food for the mind.
If you fertilize the field, the vegetables grow well.
The hardships of his youth have become the nourishment for who he is today.
Let's turn this failure into fuel for growth and do better next time.