1. An exercising weight; two spheres connected by a short bar that serves as a handle
   "He lifted the dumbbells in a bicep curl"
    
2. [informal] An ignorant or foolish person
   "Don't be such a dumbbell, it's obvious how to solve this problem";
   - dummy [informal], dope [informal], boob [informal], booby, pinhead [informal], divvy [Brit, informal], div [Brit, informal], poon [Austral, informal]

Derived forms: dumbbells

Type of: exercising weight, free weight, simple [archaic], simpleton, weight

Encyclopedia: Dumbbell