grinder

1. N-COUNT In a kitchen, a grinder is a device for crushing food such as coffee or meat into small pieces or into a powder. 食物研磨機

...an electric coffee grinder. …一個電動磨咖啡機。

2. N-COUNT A grinder is a machine or tool for sharpening, smoothing, or polishing the surface of something. 研磨機

The grinder is used for making precision tooling. 這台研磨機用於制作精細工具。