| 单词 | dumbbell | 
| 释义 | dumbbell  also dumb-bell       Word forms: dumbbells 1. countable noun  A dumbbell is a short bar with weights on either side which people use for physical exercise to strengthen their arm and shoulder muscles.  2. countable noun  If you call a person a dumbbell, you mean that they are stupid or foolish.  [informal, disapproval]    Image of dumbbell      © Brostock, Shutterstock   | 
	
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