Obstruct motorway going north towards gym following road closure (6)
I believe the answer is:
impede
'obstruct' is the definition.
(I know that obstruct is a more specific form of impede)
'motorway going north towards gym following road closure' is the wordplay.
'motorway' becomes 'MI' (resembles Md, English motorway).
'going north' is a reversal indicator.
'towards' says to put letters next to each other (I've seen this in other clues).
'gym' becomes 'pe' (Physical Education).
'following road closure' becomes 'de' (I am not sure about this - if you are sure you should believe this answer much more).
'mi' back-to-front is 'im'.
'im'+'pe'+'de'='IMPEDE'
Can you help me to learn more?
(Other definitions for impede that I've seen before include "Hold back" , "Delay progress of (something)" , "Hinder, create obstacle" , "Hinder, form an obstacle to" , "check" .)