1) British textile shop 2) Clothing industry 
Mercery (from French mercerie, the notions trade) initially referred to silk, linen, and fustian textiles imported to England in the 12th century. The term mercery later extended to goods made of these and the sellers of those goods. ==Mercer== The term mercer for cloth merchants (from French mercier, `notions dealer`) is now largely obsolete. M.....
• (n.) The trade of mercers; the goods in which a mercer deals.
Mer'cer·y noun [ French mercerie .] The trade of mercers; the goods in which a mercer deals.