Rascal Edward twice obstructed (7)
I believe the answer is:
impeded
'obstructed' is the definition.
('impede' can be a synonym of 'obstruct')
'rascal edward twice' is the wordplay.
'rascal' becomes 'imp' ('imp' can be a synonym of 'rascal').
'edward' becomes 'ed'.
'twice' shows that letters should be duplicated.
'ed' doubled is 'eded'.
'imp'+'eded'='IMPEDED'
(Other definitions for impeded that I've seen before include "Hindered, slowed down" , "Hampered" , "Blocked (progress)" , "Held up" , "Blocked, hindered" .)