1. Weights swung in the hands for exercise.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• dumbbels,
• dummbells,
• dumbells,
• dunbells,
• dumbell,
• dumbbel,
• sumbbells,
• xumbbells,
• cumbbells,
• fumbbells,
• rumbbells,
• eumbbells,
• dymbbells,
• dhmbbells,
• djmbbells,
• dimbbells,
• dumb bells,
• dumb-bels,
• Dumbelss,
• Dumblels

• dumbbell.

The adjective form of the word "dumbbells" is "dumbbell".