pro bo·no (prō bōnō)
Provided free or at low cost to certain legal clients in order to serve the public good: a lawyer's pro bono representation of low-income families.
[Latin prō bonō (publicō), for the (public) good : prō, for + bonō, ablative of bonum, the good.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.