planch

or planche

[planch, plahnch]
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noun

a flat piece of metal, stone, or baked clay, used as a tray in an enameling oven.
British Dialect.
  1. a floor.
  2. a plank.

Origin of planch

1300–50; Middle English plaunche < Middle French planche < Latin planca plank
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for planche

Historical Examples of planche