Definitions of dolly:

• noun:   conveyance consisting of a wheeled platform for moving heavy objects
• noun:   conveyance consisting of a wheeled support on which a camera can be mounted
• noun:   a small replica of a person; used as a toy
• name:  A female given name (rare: 1 in 6250 females; popularity rank in the U.S.: #692)
• name:  A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #16188)