(ˈ)mü|slēn, -üsə|l- noun
( -s )
Etymology: French, literally, muslin — more at muslin
1. : a fine sheer clothing fabric of silk, rayon, wool, or cotton that resembles muslin and has a crisp finish
2.
a. or mousseline sauce : a frothy sauce or purée made so by the addition of whipped cream or beaten egg whites ; specifically : hollandaise sauce to which whipped cream or beaten egg whites have been added
b. : mousse 1c
a fluffy mousseline of potatoes — Magazine of Books