Chap almost venturing to nick neckwear (8,6)
I believe the answer is:
mandarin collar
'neckwear' is the definition.
(I have seen 'High neckwear' mean 'mandarin collar' so perhaps 'neckwear' could also mean 'mandarin collar')
'chap almost venturing to nick' is the wordplay.
'chap' becomes 'Man' (chap can mean a man).
'almost' means to remove the last letter (most of the word but not all of it).
'venturing' becomes 'daring'.
'to nick' becomes 'collar' (I've seen this before).
'daring' with its last letter taken off is 'darin'.
'man'+'darin'+'collar'='MANDARIN COLLAR'
(Another definition for mandarin collar that I've seen is " High neckwear".)