the making of a mold, especially with plaster of Paris, of objects, footprints, tire tracks, etc., as for the purpose of identification.
the mold itself.

Origin of moulage

1900–05; < French, equivalent to moul(er) to mold (derivative of moule mold1) + -age -age Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019