to chip (off); to shave off; to slice off; to cut off
to sharpen
to dampen (one's enthusiasm, interest, etc.); to reduce; to diminish; to weaken; to spoil
職人が竹の端を削いだ。
The craftsman shaved off the edge of the bamboo.
包丁で生姜の皮を削いでいる。
I am shaving the skin off the ginger with a knife.
薄く削ぐには包丁の角度が大切だ。
The angle of the knife is important for slicing thinly.