whirligig

Noun

• a large, rotating machine with seats for children to ride or amusement

• a conical child's plaything tapering to a steel point on which it can be made to spin
  • he got a bright red top and string for his birthday
    

Verb

• whirl or spin like a whirligig

Related words

• Synonyms: 
  carousel , carrousel , merry-go-round , roundabout , top , teetotum , spinning top