Flamboyant jumper worn by short male (6)
I believe the answer is:
rococo
'flamboyant jumper worn by short male' is the definition.
I can't judge whether this definition defines the answer.
'flamboyant jumper worn by short male' is the wordplay.
'flamboyant jumper' becomes 'roo' (short for kangaroo, something which jumps. I am not sure about the 'flamboyant' bit.).
'worn by' means one lot of letters goes inside another (outside letters are worn by those on the inside).
'short' means to remove the last letter.
'male' becomes 'cock' (male chicken).
'cock' with its last letter removed is 'coc'.
'roo' going around 'coc' is 'ROCOCO'.
Can you help me to learn more?
(Other definitions for rococo that I've seen before include "Style of architecture, art, etc associated with the time of Louis XV" , "Eighteenth-century French architectural style" , "Grotesque" , "Extravagant in style" , "18th-century French style" .)