soap

(chemistry) A metallic salt derived from a fatty acid, commonly used in cleaning products.

(countable, uncountable, informal, by extension) Some other substance, often a detergent or another surfactant, able to mix with both oil and water, used for cleaning.

(slang) Money, specially when used as a bribe.

(countable, informal) A soap opera.

(countable) A solid masonry unit or brick reduced in depth or height from standard dimensions.