Be tall perhaps due to dancing (6)
I believe the answer is:
ballet
'dancing' is the definition.
(ballet is a kind of dancing)
'be tall perhaps' is the wordplay.
'perhaps' is an anagram indicator.
'be'+'tall'='betall'
'betall' with letters rearranged gives 'BALLET'.
'due to' is the link.
(Other definitions for ballet that I've seen before include "Dance art form" , "eg Giselle" , "Theatrical entertainment" , "Art of the Kirov or Bolshoi" , "Theatrical dance" .)