dumbbell

US /ˈdʌm.bel/
UK /ˈdʌm.bel/
"dumbbell" picture
1.

a short bar with a weight at each end, used for exercise

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He lifted the dumbbell to strengthen his biceps.
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She uses light dumbbells for her daily workout.
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hand weightbarbell
2.

a stupid person

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He acted like a complete dumbbell when he forgot his wallet at home.
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Only a dumbbell would try to fix that without reading the instructions.
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idiotfoolmoronduncenitwit