Table linen (7)
(Other definitions for napkins that I've seen before include "Serviettes" , "Pieces of table linen" , "Cloth squares to protect clothes while eating" .)
'table linen' is the definition.
(I know that table linen can be written as napery)
This is all the clue.
(Other definitions for napery that I've seen before include "Household or table linen" , "Tablecloths, napkins etc" , "Scots tablecloth" , "Linens for the dining table" , "Household fourteen across" .)