Definition of "cui bono" [cui• bo•no]

• Utility, advantage, or self-interest considered as the determinant of value or motivation. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "That, and the answer to the ancient Latin question: cui bono?"
• "There are several reasons, but a good place to start is the old question "cui bono?""
• "The lawyer agreed: Yes, knowing the content of that holograph or self-written will, if it exists, would tell us cui bono, who benefits, yes, I understand you."