prong (prông, prŏng)
1. A thin, pointed, projecting part: a pitchfork with four prongs.
2. A branch; a fork: the two prongs of a river.
tr.v. pronged, prong·ing, prongs
To pierce with or as if with a thin, pointed, projecting part.
[Middle English pronge, pointed instrument, pain, from Medieval Latin pronga, of Germanic origin.]
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.