dumbbell

• dumb-bell
• (rare) dumbell

From dumb +‎ bell. Originally an apparatus used for physical exercise or to practice ringing church bells. It was similar to those used to ring church bells, but didn't have a bell, which is why it was called dumb ("silent, mute").

• IPA^(key): /ˈdʌm.bɛl/

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dumbbell (plural dumbbells)

1. A weight training implement consisting of a short bar with weight counterpoised on each end.
2. (derogatory) A stupid person.

• dumbbell curve

• barbell
• kettlebell