antique market; flea market
Refers to a market or fair where antiques and secondhand goods are sold. Often held on specific days at temples or shrines.
An antique market is held at the shrine on the first Sunday of every month.
I found an old tea bowl at the antique market.
Compound of 骨董 (こっとう, 'antique') and 市 (いち, 'market').