slipboard

Noun

slipboard (plural slipboards)

1. A board sliding in grooves.
   • I ventured to draw back the slipboard on the roof, contrived on purpose to let in air.1726, Jonathan Swift, Gulliver's Travels
   • When the slipboard is let down, a quantity of barley is allowed to pass into the drum-case by means of the rollers; and it is there retained under the impetuous action of the beaters as long as the feeder-in thinks proper; and when he considers it to be sufficiently rubbed and buffetted, he...1859, John Marius Wilson, The Rural Cyclopedia, Or A General Dictionary of Agriculture, page 757
   1. (UK, historical) A sign that slides into a frame on the front of a bus for displaying special messages.
      • Despite having transferred from Plumstead to the 25 on 15 January 2005, here is 23032 (LX03 HDZ) in October 2007 making a return visit south of the river, albeit in the Pall Mall view having to carry a slipboard.2016, Matthew Wharmby, The London Bendy Bus: The Bus We Hated
      • Bristol LD6G 1432, en route to Lymington, carries a slipboard on its radiator stating 'Not on service for Bournemouth Corporation passengers'.2019, Malcolm Batten, Wessex Buses 1970-1985: Mainland National Bus Company Fleets
   2. 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.
      • Slipboard fence as low as $8.67 per 10 foot section.1991, Chronicle of the Horse - Volume 54, Issues 14-26, page 13
      • Continue .5 miles and look for a white slipboard fence on the right at the corner of Warson and Litzsinger Roads.1998, The 1998. Garden Conservancy Open Days Directory, page 58
2. 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.
   • The parties agree that, on March 14, 1975, the slipboard was frozen. Extras and substitutes shall continue to be hired from the slipboard when needed in accordance with the provisions of this section.1978, Bulletin of the International Typographical Union - Volumes 66-67, page 18
   • In response to Newsday's questions, Ferraujola explained that if Newsday needed a certain number of people to work after removal of the slipboard, it could call the union hall and they would be supplied.1992, Decisions and Orders of the National Labor Relations Board, page 875