Paris summit proscribed synthetic dress (4)
I believe the answer is:
sari
'dress' is the definition.
(sari is a kind of dress)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for sari that I've seen before include "Hindu female garment" , "Traditional dress of Indian women" , "Indian costume" , "Traditional dress of Hindu women" , "Traditional Indian women's dress" .)