Saw Miro as drunk round pub (8)
I believe the answer is:
aphorism
'saw' is the definition.
(saw can mean a proverb or saying)
'miro as drunk round pub' is the wordplay.
'drunk' indicates anagramming the letters.
'round' indicates putting letters inside.
'pub' becomes 'ph' (public house).
'miro'+'as'='miroas'
'miroas' is an anagram of 'aorism'.
'aorism' enclosing 'ph' is 'APHORISM'.
(Other definitions for aphorism that I've seen before include "One could briefly say this" , "Maxim, short wise saying" , "Adage" , "Terse saying" , "Saw" .)