“Boring thing” (dismissing male jacket) (5)
I believe the answer is:
gilet
'jacket' is the definition.
(I've seen this before)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for gilet that I've seen before include "apparel" , "Type of jacket" , "Sleeveless padded jacket" , "Body-warmer" , "Waistcoat" .)