Is its function to fix a match? (6)
I believe the answer is:
tiepin
'is its function' is the definition.
I can't tell whether this definition defines the answer.
'fix a match?' is the wordplay.
'fix' becomes 'tie' (tying is a kind of fixing).
'a match?' becomes 'pin' (I can't explain this - if you can you should believe this answer much more).
'tie'+'pin'='TIEPIN'
'to' is the link.
Can you help me to learn more?
(Other definitions for tiepin that I've seen before include "Neckwear securer" , "Ornamental securer" , "Fastener for strip around the neck" , "It holds neckwear in place" , "It's used to hold neckwear in place" .)