研ぐ – Vocabulary details

研とぐ

Verb (5-dan, ぐ, transitive)

1. to sharpen; to hone; to whet; to grind

2. to wash (rice)

esp. 磨ぐ

3. to scour; to polish; to burnish

refine

と

ぐ

to lie in wait; to wait for an opportunity to hurt someone; (lit.) to sharpen one's fangs

to sharpen one's claws

彼かれはナイフを研といでいました。

He was sharpening a knife.

研とがないと、刃ははすぐに鈍にぶる。

If you don't sharpen it, the blade soon goes dull.

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