indoor sandals; slippers
Refers to sandals or slippers worn inside the house, typically in traditional Japanese settings. Often used when entering a home or a tatami room.
Please change into indoor sandals at the entrance.
At the ryokan, indoor sandals are provided.
Compound of 上 (うわ, 'upper' or 'indoor') and 草履 (ぞうり, 'traditional sandals'). The exact historical derivation is uncertain, but the term clearly refers to sandals worn inside the house.