Angular figure seen in velour homburg (5)
I believe the answer is:
rhomb
'angular figure' is the definition.
'in velour homburg' is the wordplay.
'in' indicates a hidden word.
'RHOMB' is hidden within 'velour homburg'.
'seen' acts as a link.
(Other definitions for rhomb that I've seen before include "Figure of four equal sides" , "Crystal with six faces having parallel edges" , "Diamond shape" , "Crystal shape" , "Equilateral parallelogram" .)