Definition of French chalk in US English:

French chalk

noun

  • Talc used for marking cloth and removing grease and, in powder form, as a dry lubricant.

    • ‘Whiting, French chalk, chalk and marble dust are different forms of calcium carbonate.’
    • ‘Gessa is made of water mixed with rabbit skin glue, calcium carbonate, gilder's whiting, French chalk and various fine white powders.’
    • ‘I had no trouble spotting the French chalk.’
    • ‘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.’
    • ‘Our products mainly consist of calcite powder, French chalk, active coarse whiting and other superfine powder, which are welcomed in the more than 10 provinces and districts markets.’

Pronunciation

French chalk

/ˈˌfrenCH ˈCHôk/