Similar to others - had the metanism and the sense of the answer but couldn't stick the landing without a nudge. Tried PAIR OF EYES, DOUBLE EYES, and even thought of SIDE EYES but could not stretch that to 10 letters without a nudge. Good concept and fun challenge!
(BTW, your settings for the puzzle did not include a delay for the "Give Up" to be active, so it took all my willpower to not peek once I was narrowing in!)