Belgium
torchon
Meaning
a cloth for washing the floor
Elsewhere
serpillière
Explanation
A French torchon dries the dishes. In Belgium and Canada the same word is the cloth you mop the floor with, the thing France calls a serpillière.
Example
Passe un coup de torchon sur le carrelage, il est plein de traces.
Give the tiles a wipe with the floor cloth, they're covered in marks.
Origin
From the Old French torçon, related to torche plus the -on ending.
Where
Belgium
Canada
Source