I. ˈmüs noun
Etymology: French, literally, froth, moss, from Old French mosse, of Germanic origin; akin to Old High German mos moss — more at moss
Date: 1892
1. : a light spongy food usually containing cream or gelatin
2. : a molded chilled dessert made with sweetened and flavored whipped cream or egg whites and gelatin
chocolate mousse
3. : a foamy preparation used in styling hair
II. transitive verb
( moussed ; mouss·ing )
Date: 1984
: to style (hair) with mousse