<p><strong>Noun</strong></p><ul><li>A sweetened and flavored dessert with a base of whipped cream, beaten egg whites, or both: chocolate mousse.</li><li>An aspic, unsweetened and containing meat, vegetables, or fish, usually chilled in a mold: salmon mousse.</li><li>A foamy preparation used on the hair to help hold it in place, applied usually to damp hair before grooming or styling and worked in until absorbed.</li></ul>