Burden, impediment (11)
I believe the answer is:
encumbrance
I believe this is a double definition.
'burden' is the first definition.
(I know that burden can be written as encumbrance)
'impediment' is the second definition.
(I know that encumbrance is a type of impediment)
(Other definitions for encumbrance that I've seen before include "liability" , "Impediment - burden" , "drag" , "confounded nuisance!" .)