SOAP

noun

1. 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.
2. A metallic salt derived from a fatty acid
3. Flattery or excessively complacent conversation.

verb

1. To apply soap to in washing.
2. To cover, lather or in any other form treat with soap, often as a prank.
3. To be discreet about (a topic).