<p><strong>Noun</strong></p><ul><li>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.</li><li>Any metallic salt of an acid derived from a fat.</li><li>Slang. money, especially as used for bribery in politics.</li><li>Slang. Also soap opera.</li></ul><p><strong>Verb</strong></p><ul><li>(used with object) to rub, cover, lather, or treat with soap.</li></ul>