1. noun
a) 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.
I tried washing my hands with soap, but the stain wouldnt go away.
b) A soap opera.
2. verb
a) To apply soap to in washing.
Be sure to soap yourself well before rinsing.
b) To cover with soap as a prank.
Those kids soaped my windows!
See Also: soaper, saponification
Wikipedia foundation.