Get below platform (10)
I believe the answer is:
understand
'get' is the definition.
(thesaurus)
'below platform' is the wordplay.
'below' becomes 'under' ('under' can be a synonym of 'below').
'platform' becomes 'stand' (stand is a kind of platform**).
'under'+'stand'='UNDERSTAND'
(Other definitions for understand that I've seen before include "See" , "Make sense of" , "Comprehend" , "Perceive the meaning of" , "Twig" .)