Roaring Twenties style, for short (4)

I believe the answer is:
deco
'roaring twenties style for short' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for deco that I've seen before include "Art's partner" , "Art -, C 20 style of ornamentation" , "Style of design popular in the 1920s and 1930s" .)