nutcracker
A tool for cracking open walnuts or other nuts.
I crack walnuts with a nutcracker.
Common kana-kanji mixed spelling; the kanji 胡桃 is less common in modern usage.
Kanji spelling using 胡桃 for walnut; less common but still encountered.
Compound of くるみ (walnut) and 割り (cracking, splitting).