Definition of moussing:
(n) :
A styling cream used for hair.
(n) :
An airy pudding served chilled, particularly chocolate mousse.
(n) :
A savory dish, of meat or seafood, containing gelatin.
(n) :
A stable emulsion of water and oil that is created by wave action churning the water where an oil spill occurs.
(v) :
To apply mousse (styling cream).