a. A group of soldiers.
b. troops Military units; soldiers.
c. A unit of cavalry, armored vehicles, or artillery in a European army, corresponding to a platoon in the US Army.
2. A unit of at least five Boy Scouts or Girl Scouts under the guidance of an adult leader.
3. A group or company of people, animals, or things.
intr.v. trooped, troop·ing, troops
To move or go as a group or in large numbers: The students trooped into the auditorium.
[French troupe, from Old French trope, probably from Vulgar Latin *troppu-.]
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.