mousse

1. An airy pudding served chilled, particularly chocolate mousse. (countable, uncountable)
2. A savory dish, of meat or seafood, containing gelatin. (countable, uncountable) · ham mousse
3. A styling cream used for hair. (countable, uncountable) · He slicked his hair back with mousse, but the cowlick still stuck up.
4. A stable emulsion of water and oil that is created by wave action churning the water where an oil spill occurs. (countable, uncountable)

Plural mousses