Yellow flowery necklace seen from the right window (5)
I believe the answer is:
oriel
'window' is the definition.
(oriel is a type of window)
'yellow flowery necklace seen from the right' is the wordplay.
I cannot quite see how this works, but
'yellow' could be 'or' (heraldic term) and 'or' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for oriel that I've seen before include "Opening" , "Overhanging recess (window)" , "Projecting window in upper storey" , "Type of window; Oxford college" , "Type of bay window" .)