In dictionaries:
Dumbbell Nebula
Planetary nebula shaped like dumbbell.
dumbbell curve
(mathematics) Any of a family of closed curves having two lobes; they satisfy the general equation y² = α²(x⁴ - x⁶).
Dumbbell Indemnity
"Dumbbell Indemnity" is the sixteenth episode of the ninth season of the American animated television series The Simpsons.
dumbbell tenement
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