|lather (ˈlɑːðə, ˈlæ-)|
|1.||foam or froth formed by the action of soap or a detergent in water|
|2.||foam formed by other liquid, such as the sweat of a horse|
|3.||informal a state of agitation or excitement|
|4.||to coat or become coated with lather|
|5.||(intr) to form a lather|
|[Old English lēathor soap; related to Old Norse lauthr foam]|
see in a lather.