roller board
/ˈrəʊlə ˌbɔːd/noun
1 Music. 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.
- Recorded earliest in attributive use..
2A board mounted on rollers.
Origin
Mid 17th century. From roller + board.
- subcategorisation
- subcategorise
- subcategorization
- subcategorize
- subcategory
- clootie dumpling
- clop
- clopidogrel
- cloqué
- closable
- close
- close but no cigar
- close by
- close call
- close-caption
- close-coupled
- close-cropped
- closed
- closed book
- closed caption
- closed chain
- closed-circuit television
- closed communion
- closed compound
- closed couplet