A wholesaler; a wholesale store/dealer that sells goods in bulk to retailers.
この店は食品の問屋から仕入れている。
This shop sources its goods from a food wholesaler.
問屋で大量に買えば割引してもらえることが多い。
If you buy in bulk from a wholesaler, you can often get a discount.
問屋街では同業者向けの品物が並んでいる。
In the wholesale district, goods for businesses are displayed.