___-hit wonder (3)
I believe the answer is:
one
(Other definitions for one that I've seen before include "Single and undivided" , "Single, unitary" , "time" , "Ace" , "Identical; number" .)
I believe the answer is:
one
(Other definitions for one that I've seen before include "Single and undivided" , "Single, unitary" , "time" , "Ace" , "Identical; number" .)