noun
high chair; child's chair
Polite term for a chair designed for small children, especially a high chair used at dining tables. The お子様 prefix adds a respectful, customer-service tone, common in restaurants and stores.
お子様椅子をご用意しております。
We have high chairs available.
レストランでお子様椅子を頼んだ。
I asked for a high chair at the restaurant.
Compound of お子様 (polite form of 子供, 'child') and 椅子 ('chair'). The polite prefix お and honorific suffix 様 create a respectful term suitable for customer-facing contexts.