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to sharpen; to hone; to whet; to grind
to wash (rice)
to scour; to polish; to burnish
砥石を使って丁寧に刃物を砥いでいた。
He was carefully sharpening the blade using a whetstone.
切れ味が悪くなった鋏を砥ぐことにした。
I decided to sharpen the scissors that had become dull.
砥いだばかりの包丁で野菜がすっと切れた。
The freshly sharpened knife cut through the vegetables effortlessly.