claw sharpening
The act of a cat sharpening its claws, often on furniture or a scratching post.
The cat is sharpening its claws on the sofa.
scratching post; claw sharpener
A product or object designed for cats to scratch and sharpen their claws on.
I bought a new scratching post.
Kana-only spelling, sometimes used in casual or pet-related contexts.
Compound of 爪 (つめ, 'claw') and 研ぎ (とぎ, 'sharpening'), the continuative form of 研ぐ (とぐ, 'to sharpen').