Crossword Genius

Witness observed children's plaything (6)

Ross

I believe the answer is:

seesaw

'children's plaything' is the definition.

'witness observed' is the wordplay.
'witness' becomes 'see' (synonyms).
'observed' becomes 'saw' (I've seen this before).
'see'+'saw'='SEESAW'

(Other definitions for seesaw that I've seen before include "Playground rocker" , "Pivoted amusement" , "wild mare" , "swing" , "Fluctuating playground ride" .)

I've seen this clue in The Telegraph.
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