v. a·but·ted, a·but·ting, a·buts
To touch or end at one end or side; lie adjacent.
1. To border upon or end at; be next to.
2. To support as an abutment.
[Middle English abutten, from Old French abouter, to border on (a-, to from Latin ad-; see AD- + bouter, to strike; see bhau- in the Appendix of Indo-European roots) and from Old French abuter, to end at (from but, end; see BUTT4).]
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.