noun:a short bar with weights at the ends that is used to make muscles stronger
noun:a short bar with weights at each end that is used usually in pairs for exercise
synonyms: dummy, dope, boob
Examples
I feel like a 'dumbbell' for making such a stupid mistake.
Movie quotes
(..) Wow. This is a real wake-up call for me. Okay. I'm gonna get a Bowflex. I'm gonna commit. I'm gonna get some dumbbells. You know you can't eat dumbbells, right? It's like his muscles are made of Cotati metal fibers. (..)