Cases of word usage

1) (of) a young woman from overseas who, in return for light household duties, receives board and lodging, and facilities for study (au pair)

2) a long wooden board as used to keep other boards in place (batten)

3) a person who manages or controls (especially one of a group called 'the Board of Directors") the affairs of a business company (director)

4) a building in which board and lodging are provided for students, people working away from home etc (hostel)

5) a separate part of the surface of a door, wall etc raised above or sunk below the surrounding area; a board or other surface for controls and instruments (panel)

6) a mark, object, symbol etc used to represent something: 'mathematical sings' such as '+', '-', 'x', '?'; a word or words, design etc on a board or plate to give a warning, or to give direction; to write (one's name) on (a letter, application form etc) (sign)

7) a long, narrow board used for sliding on ice (toboggan)