Linen putting lines on back of neck (6)
I believe the answer is:
napery
'linen' is the definition.
(I know that napery is a type of linen)
'lines on back of neck' is the wordplay.
'lines' becomes 'ry' (abbreviation for railway).
'on' means one lot of letters go next to another.
'back of neck' becomes 'nape' (nape means the back of someone's neck).
'ry' after 'nape' is 'NAPERY'.
'putting' acts as a link.
(Other definitions for napery that I've seen before include "Scots tablecloth" , "Household fourteen across" , "Tablecloths, napkins etc" , "Heavy white table linen" , "Household or table linen" .)