Yearn terribly to cover piano in table linen (6)
I believe the answer is:
napery
'table linen' is the definition.
(I know that table linen can be written as napery)
'yearn terribly to cover piano' is the wordplay.
'terribly' indicates anagramming the letters.
'to cover' indicates putting letters inside.
'piano' becomes 'p' (musical abbreviation).
'yearn' is an anagram of 'naery'.
'naery' placed around 'p' is 'NAPERY'.
'in' acts as a link.
(Other definitions for napery that I've seen before include "Heavy white table linen" , "Fine table linen" , "Tablecloths, napkins etc" , "Linens for the dining table" , "Household or table linen" .)