see-saw

Universal Words noun, verb noun 1 (AmE also teeter-totter) [C] a piece of equipment for children to play on consisting of a long flat piece of wood that is supported in the middle. A child sits at each end and makes the see-saw move up and down: Can we go on the see-saw? 2 [sing.] a situation in which things keep changing from one state to another and back again: The match was a see-saw battle between the two teams. verb [V] to keep changing from one situation, opinion, emotion, etc. to another and back again: Her emotions see-sawed from anger to fear. * Share prices see-sawed all day.