Go up and down (... letter 2) (4)
I believe the answer is:
yoyo
(Other definitions for yoyo that I've seen before include "Toy" , "Plaything" , "Item on string" .)
I've seen this clue in the Universal.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free.
Check out my app
or
learn more
about the Crossword Genius project.