Crossword Genius

Highest form of architecture? (4)

Ross

I believe the answer is:

roof

I'm a little stuck... Click here to teach me more about this clue!

'architecture?' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe you can see an association between them that I don't see?

'highest form of' is the wordplay.
'highest form' becomes 'ro' (I can't justify this - if you can you should believe this answer much more).
'ro'+'of'='ROOF'

Can you help me to learn more?

(Other definitions for roof that I've seen before include "Part of mouth" , "Cover for house" , "Protective covering on top" , "Top of car/house" , "hit by someone in a temper" .)

I've seen this clue in The Mirror.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.