slipboard

== English == === Etymology === From slip +‎ board. === Noun === slipboard (plural slipboards) A board sliding in grooves. (UK, historical) A sign that slides into a frame on the front of a bus for displaying special messages. A type of fence consisting of panels or boards held between uprights that have grooves on either side to hold the edges of the two adjacent boards. A list of substitute workers that are available in a union-controlled business, listed in priority order and by the shift they would like to work.