Part of speech: Verb
apply a styling gel to
Example: she mousses her hair
Categories: Groom, Neaten
Part of speech: Noun
a light creamy dish made from fish or meat and set with gelatin
Categories: Dish
Part of speech: Noun
toiletry consisting of an aerosol foam used in hair styling
Categories: Toiletry, Toilet articles
Gel, Hair mousse, Hair gel, Mousse
The word "mousse" comes from Proto-Germanic *musą. It started in Old Dutch mosa. Then it appeared in Old French mosse, which was borrowed from French mousse.
Studying PIE roots reveals what ancient peoples valued—their words for family, animals, and nature survived longest.