1. A cleansing agent, manufactured in bars, granules, flakes, or liquid form, made from a mixture of the sodium salts of various fatty acids of natural oils and fats.
2. A metallic salt of a fatty acid, as of aluminum or iron.
3. Slang. Money, especially that which is used for bribery.
4. A soap opera.

1. To treat or cover with or as if with soap.
2. 1. Informal. To softsoap; cajole.
   2. Slang. To bribe.

no soap Slang.

1. Not possible or permissible.
2. Unsuccessful; futile.

[Middle English sope, from Old English sāpe.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.