As a Noun: 1. The cost of food and a room which is provided when you stay somewhere long term, like in a hotel, but especially in a private home or school. English = board. 2. A person who stays long term in someone's house and pays for food and accommodation. English = boarder. 3. A pupil who lives at school during term time. English = boarder. As a Verb or Adjective: 1. To stay somewhere long term, especially someone else's house or at a school, and pay for your food and room. English = board.