grinder
noun [ C ] uk/ˈɡraɪn.dər/ us/ˈɡraɪn.dɚ/
碾磨器械，研磨机
a machine used to rub or press something until it becomes a powder
a coffee/pepper grinder 咖啡豆／辣椒碾磨机
US (also meat grinder); (UK mincer)绞肉机
a machine used for cutting meat into small pieces
See also: knife grinder