noun
(Canada, US, often childish) A seesaw; a piece of playground equipment consisting of a long board with seats at either end, with a pivot point in the center.
(Northeastern US, Atlantic Canada, often childish) A type of glider swing; a piece of playground equipment consisting of a tandem swing attached to a swingset, with two riders facing each other.
verb
(Canada, US, intransitive) To ride a seesaw.