n. pl. bo·zos
1. A fellow; a guy.
2. A dunce; a fool.
[Earlier, a stupid, muscular fellow, of unknown origin (later influenced in meaning by the character of Bozo the Clown, introduced by Capitol Records in 1946 to market records for children ).]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. 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.