Crossword Genius

This person's architectural feature creates an obstruction (10)

Ross

I believe the answer is:

impediment

'an obstruction' is the definition.
('impediment' can be a synonym of 'obstruction')

'this person's architectural feature' is the wordplay.
'this person's' becomes 'im' (this person means the crossword setter themselves).
'architectural feature' becomes 'pediment' (I've seen this before).
'im'+'pediment'='IMPEDIMENT'

'creates' acts as a link.

(Other definitions for impediment that I've seen before include "Obstacle" , "Let" , "Hindrance, obstruction" , "opposition" .)

I've seen this clue in The Telegraph.
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