It may wilt and droop in the centre (7)
I believe the answer is:
corsage
'it may wilt' is the definition.
The definition suggests a singular noun which matches the answer.
'droop in the centre' is the wordplay.
'droop' becomes 'sag' (synonyms).
'in' means one lot of letters goes inside another.
'the centre' becomes 'core' (core can mean something's centre).
'sag' inserted into 'core' is 'CORSAGE'.
'and' is the link.
Can you help me to learn more?
(Other definitions for corsage that I've seen before include "Spray of flowers" , "Nosegay, posy" , "Flowers pinned to dress" , "Flower worn on bodice" , "Part of dress" .)