Wheel around in short coat in a circle of flowers (7)
I believe the answer is:
corolla
'a circle of flowers' is the definition.
(circle of petals on a flower)
'wheel around in short coat' is the wordplay.
'wheel around' becomes 'roll' (roll can mean to wheel or turn around).
'in' indicates putting letters inside.
'short' means to remove the last letter.
'coat' with its final letter taken off is 'coa'.
'roll' placed within 'coa' is 'COROLLA'.
'in' acts as a link.
(Other definitions for corolla that I've seen before include "Whorl of flower petals" , "bit of a bloomer" , "Internal whorl of a flower" , "part of plant" , "Part of a flower" .)