dumbbell

/ˈdʌmˌbɛl/
noun
  1. A short bar with weights on each end, used for exercise to strengthen muscles.
    • The gym has a rack of dumbbells ranging from 5 to 50 pounds.
    • She lifted a 10-pound dumbbell to work on her biceps.
    • I do dumbbell rows every Tuesday to build back strength.
  2. A stupid person (informal, mildly insulting).
    • Don't be such a dumbbell—read the instructions first.
    • He called me a dumbbell for forgetting my umbrella, but it wasn't even raining.
    • Only a dumbbell would try to microwave a metal spoon.
Synonyms