Spin our petite convertible (9)
I believe the answer is:
pirouette
'spin' is the definition.
(I know that pirouette is a type of spin)
'our petite convertible' is the wordplay.
'convertible' indicates an anagram.
'our'+'petite'='ourpetite'
'ourpetite' with letters rearranged gives 'PIROUETTE'.
(Other definitions for pirouette that I've seen before include "Dancer's twirl" , "Balletic whirl" , "A dancer's spinning movement on tiptoe" , "Whirl round on one's toes" , "Twirl like a ballerina" .)