Crossword Genius

Peeper that doesn't make a sound (3)

Ross

I believe the answer is:

eye

(Other definitions for eye that I've seen before include "Look at with interest" , "'Cast a cold ... on life, on death' (Yeats)" , "Location of 11dn" , "Observer" , "Symmetrical spot" .)

I've seen this clue in The New York Times.
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