tag sale noun2 •(US, New-England) A domestic sale of second-hand items; a garage sale or yard sale.All of a sudden, my legs went to work on their own, sweeping me into my living room and leaving me at the mahogany bookshelf Iʼd purchased from a tag sale shortly after moving to Catskill. — 2021 •[in compounds] A retail sale in which items included in the sale are tagged with a coloured tag. formstag sales