day boarder
/ˈdeɪ ˌbɔːdə/noun
1A pupil at a boarding school or similar educational establishment who remains at school for meals, but returns home in the evening.
2A person who pays to have prepared meals at a boarding house but who does not lodge there overnight. Compare boarder. Chiefly US in later use. Now historical.
Origin
Mid 18th century. From day + boarder.