"A cast or impression, especially of a person or a part of the body; the process of making a cast or taking an impression; the material used for this", Early 20th cent.; earliest use found in Encyclopaedia Britannica. From French moulage act of moulding something, action of taking an impression (of something) in order to create a mould, reproduction made by taking an impression from mouler + -age.[moulage etymology, moulage origin, 英语词源]