Move up and down (3)
'move up and down' is the definition.
(synonyms)
This is all the clue.
(Other definitions for seesaw that I've seen before include "Playground balancing board" , "Pivoted amusement" , "youngsters' game" , "Vacillate; playground feature" , "vacillate in policy" .)
'move up and down' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for bob that I've seen before include "Move up and down as in water" , "Pre-decimal coin" , "Short cut" , "money once" , "Bounce" .)