Definition of over-the-board in English:

over-the-board

adjective

Chess
  • Designating or relating to play in which participants face each other across the chessboard (as opposed to correspondence play, problem chess, etc.).

Origin

1920s; earliest use found in The Times. From over + the + board.

Pronunciation

over-the-board

/ˌəʊvəðəˈbɔːd/