Some item knitted for wear round the neck (3)
I believe the answer is:
tie
'some item' is the definition.
(I have seen 'Item of neckwear ' mean 'tie' so perhaps 'item' could also mean 'tie')
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for tie that I've seen before include "Equality of score" , "Bind; knot" , "Knot; limit" , "Equal scores" , "Dead-heat" .)