It secures a woman's headgear (6)
I believe the answer is:
hatpin
(Other definitions for hatpin that I've seen before include "Bonnet fixer" , "Fastener for headgear" , "Fastener for millinery" , "Headgear fixer" .)
I've seen this clue in The Guardian.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free.
Check out my app
or
learn more
about the Crossword Genius project.