Definition of "turnabout"

turnabout

noun
countable and uncountable, plural turnabouts
1. The act of turning about so as to face in the opposite direction.
2. A change from one thing to its opposite, or from a situation to the reverse.
  Quotations
  Any idea of how many transsexuals there are in America? About 10,000, some 1500 of whom have changed their sex by surgery. The male-to-female turnabout costs $3000-$5000, while the female-to-male process runs up to $12,000.
  1974 April 7, “People”, in Boston Globe
3. A reversal of a decision or opinion etc; a change of mind or flip-flop.
4. A merry-go-round.