boarder
n.a person who lives in a house or school and pays for their meals and a room. It can also mean a person who rides a board, like a skateboard or a snowboard.
n.a person who resides in a building or institution and pays for lodging and meals; also, a person who rides a board for sport or recreation. Often used in the context of boarding schools or specific athletic disciplines.
“The school has many international boarders this year.”
“As a boarder at the academy, she spent most of her time in the dormitory with her classmates.”
“The local hostel caters primarily to young boarders who require a quiet environment for their studies while staying within a modest budget.”
From board + -er.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.