also: みせじるし
noun
store stamp; shop stamp
A stamp used by a store, often placed on receipts or merchandise to indicate the item was purchased there. The reading てんいん is standard; みせじるし is a less common alternate reading.
レシートに店印を押してもらった。
I had the store stamp put on the receipt.
この商品には店印がないので、返品できません。
This item doesn't have a store stamp, so it cannot be returned.
Compound of 店 (store) and 印 (stamp, seal). The reading てんいん is the on'yomi combination; みせじるし is a kun'yomi-based reading.