1. (noun)top, whirligig, teetotum, spinning top a conical child's playthingtapering to a steelpoint on which it can be made to spin "he got a bright red top and string for his birthday"
2. (verb)carousel, carrousel, merry-go-round, roundabout, whirligig a large, rotating machine with seats for children to ride or amusement
4. (noun)whirligig any one of numerous species of beetles belonging to Gyrinus and allied genera. The body is firm, oval or boatlike in form, and usually darkcolored with a bronzelike luster. These beetles live mostly on the surface of water, and move about with greatcelerity in a gyrating, or circular, manner, but they are also able to dive and swim rapidly. The larva is aquatic. Called also weaver, whirlwig, and whirlwig beetle
Definition of whirligig 
