Understand the sense (3)
I believe the answer is:
see
This clue is a double definition.
'understand' is the first definition.
('see' can be a synonym of 'understand')
'the sense' is the second definition.
(thesaurus)
(Other definitions for see that I've seen before include "Discern visually" , "Spot" , "ecclesiastical division" , "Appreciate" , "around cathedral" .)