a. Abbr. Rd. An open, generally public way for the passage of vehicles, people, and animals.
b. The surface of a road; a roadbed.
2. A course or path: the road to riches.
3. A railroad.
4. often roads Nautical A roadstead.
down the road
In the future; at a later date.
on the road
1. On tour, as a theatrical company.
2. Traveling, especially as a salesperson.
3. Wandering, as a vagabond.
[Middle English rode, rade, a riding, road, from Old English rād; see reidh- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 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.