soap
1. soap \'so-p\ \-.ma--kin\ n [ME sope, fr. OE sa-pe; akin to OHG seifa soap, L sebum] tallow 1: a cleansing and emulsifying agent made usu. by action of alkali on fat o r fatty acids and consisting essentially of sodium or potassium salts of such acids 2: a salt of a fatty acid - soap.mak.ing n 2. soap vt 1: to rub soap over or into 2: to address in smooth or complimentary speech : FLATTER