Definition of French chalk in English:

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French chalk

noun

[mass noun]
A kind of steatite used for marking cloth and removing grease and, in powder form, as a dry lubricant.
Example sentences
  • Gessa is made of water mixed with rabbit skin glue, calcium carbonate, gilder's whiting, French chalk and various fine white powders.
  • A variety of substances can be used to make the board sufficiently slippery - French chalk, black lead, beer, paraffin and petrol are all used.
  • Rare laces and old silks may take on a renewed appearance if allowed to stand in French chalk for several days.

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