i Register
In some senses, dumbbell is marked as obsolete, derogatory, slang. Watch for register when choosing this word.
noun
A weight training implement consisting of a short bar with weight counterpoised on each end.
He was exercising with the dumbbells in gym class today.
He also had a room strewn with the toys of the trade and what-have-you: ropes and ironmongery, buoyancy aid and bagpipes, fetid socks and half-eaten haggises, dumbbells and ski-instructor sweaters.
A bell with no clapper, used as bell-striking practice or to strike as a form of physical exercise
A stupid person.
That's fool's gold, you dumbbell. Iron pyrite. Nobody would give you a dime for a ton of it.