1 a tool or piece of equipment made for a particular purpose （为特定用途制造的）工具，装置，设备，仪器: a security device which detects any movement 可探测出任何活动的保安装置labour-saving devices such as washing machines and vacuum cleaners 节省人力的设备，如洗衣机和吸尘器 ☞Look at the note at tool. 参看tool的注释。

2 a clever method for getting the result you want 巧妙办法；策略: Critics dismissed the speech as a political device for winning support. 批评者认为那篇演说不过是用以博取支持的政治把戏。