Means of deciding winner of neckwear on holiday (8)
I believe the answer is:
tiebreak
'means of deciding winner' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.
'neckwear on holiday' is the wordplay.
'neckwear' becomes 'tie' (type of neckwear).
'on' is a charade indicator (letters next to each other) (in a down clue, letters appear on others).
'holiday' becomes 'break' (break can mean a holiday or time off).
'tie'+'break'='TIEBREAK'
'of' is the link.
Can you help me to learn more?
(Other definitions for tiebreak that I've seen before include "Match decider" , "Means of settling tennis set" , "Tennis set decider" , "Game decider" , "Means of deciding winner after level scores" .)