King blocking John's views (5)
I believe the answer is:
looks
'views' is the definition.
(I've seen this before)
'king blocking john's' is the wordplay.
'king' becomes 'K' (chess abbreviation).
'blocking' indicates putting letters inside (block can mean to plug a gap in something).
'john's' becomes 'loo's' (both can mean a toilet).
'k' inserted into 'loos' is 'LOOKS'.
(Other definitions for looks that I've seen before include "appearances?" , "Seems" , "(Person's) appearance" , "Peers" , "Beauty, comeliness" .)