(uncountable) a substance able to mix with both oil and water, used for cleaning, often in the form of a solid bar or in liquid form, derived from fats or made synthetically
(chemistry) a metallic salt derived from a fatty acid
a flattery or excessively complacent conversation
(slang) money, specially when used for bribing purposes
Verbit
(transitive) To apply soap to in washing.
(transitive, informal) To cover, lather or in any other form treat with soap, often as a prank.
(transitive, informal) To be discreet about (a topic).