Definition of mousseline
1 : a fine sheer fabric (as of rayon) that resembles muslin
2a : a sauce (such as hollandaise) to which whipped cream or beaten egg whites have been addedb : mousse 1 salmon mousseline
Learn More about mousseline
Seen and Heard
What made you want to look up mousseline? Please tell us where you read or heard it (including the quote, if possible).