dumb-bell
noun
[ ˈdʌmbɛl ]
• a short bar with a weight at each end, used typically in pairs for exercise or muscle-building.
• a stupid person.
Origin:
early 18th century: originally denoting an apparatus similar to that used to ring a church bell (but without the bell, so noiseless or ‘dumb’); dumb-bell (sense 2) (dating from the 1920s) is an extended use by association with dumb ‘stupid’.
