Crossword Genius

Witnesses going back and forth (4)

Ross

I believe the answer is:

sees

I believe this is a double definition.

'witnesses' is the first definition.
(I know this)

'going back and forth' is the second definition.

(Other definitions for sees that I've seen before include "Watches" , "Looks (both ways!)" , "Observes or perceives" , "Bishops' dioceses" , "Spots" .)

I've seen this clue in the USA Today.
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