Stringed toy (2-2)
(Other definitions for yo-yo that I've seen before include "An up-and-down toy on a string" , "Ma perhaps" , "Child's toy on a string" , "Toy - fluctuate wildly" , "produces toy" .)
(Other definitions for yoyo that I've seen before include "Plaything" , "Toy" , "Item on string" .)