Real Dictionary

soap
variable noun: Soap is a substance that you use with water for washing yourself or sometimes for washing clothes.

soap in American English
a substance used with water to produce suds for washing or cleaning: soaps are usually sodium or potassium salts of fatty acids, produced by the action of an alkali, as caustic soda or potash, on fats or oils
noun: a substance used for washing and cleansing purposes, usually made by treating a fat with an alkali, as sodium or potassium hydroxide, and consisting chiefly of the sodium or potassium salts of the acids contained in the fat

soap in British English
noun: a cleaning or emulsifying agent made by reacting animal or vegetable fats or oils with potassium or sodium hydroxide. Soaps often contain colouring matter and perfume and act by emulsifying grease and lowering the surface tension of water, so that it more

soap in Hospitality
noun: Soap is a substance that you use with water for washing yourself or sometimes for washing clothes.