dumb-bell
/ˈdʌmbel/noun
1
- a short bar with a weight at each end, used typically in pairs for exercise or muscle-building哑铃。
1.1
- as modifier shaped like a dumb-bell形似哑铃的：
a dumb-bell molecule.
哑铃状的分子。
2
- informal a stupid person〈非正式〉笨蛋, 蠢货。
词源
early 18th cent.: originally denoting an apparatus similar to that used to ring a church bell （but without the bell, so noiseless or 'dumb'）; sense 2 (dating from the 1920s) is an extended use by association with DUMB 'stupid'.