Definition of roller board in English:

roller board

noun

  • 1Music. The board to which the rollers are attached in an organ; the board and rollers considered collectively as part of the tracker action of an organ.

  • 2A board mounted on rollers.

Origin

Mid 17th century. From roller + board.

Pronunciation

roller board

/ˈrəʊlə ˌbɔːd/