Straddling (7)
I believe the answer is:
astride
'straddling' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for astride that I've seen before include "With legs stretched apart - tirades (anag)" , "It dares to be with legs wider apart" , "On the back of" , "Straddling (horse)" , "On top of" .)