Realize (3,2)
'realize' is the definition.
(I know that realize can be written as see)
This is all the clue.
(Other definitions for see that I've seen before include "Norwich, for example" , "Witness; ensure" , "Bishop's responsibility; observe" , "Salisbury, for one" , "ecclesiastical division" .)
(Other definitions for hit on that I've seen before include "Discovered suddenly or, in modern slang, made advances towards" , "Serendipitously find" , "Make advances to (US)" , "Discover (something) by chance" , "Discover, think of" .)