widget
/ˈwɪdʒɪt/noun
1- informal a gadget or mechanical device, in particular〈非正式〉小装置, 小机械, 小玩意, 尤指：
1.1
- Computing a component of a user interface which operates in a particular way【计算机】窗口小部件。
1.2
- (in some beer cans) a plastic device which introduces nitrogen into the beer, giving it a creamy head in imitation of draught beer（某些啤酒罐上）（用来向啤酒内导入氮的）塑料装置。
词源
1930s (originally US)： perhaps an alteration of G ADGET.