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1. The gear or tackle, other than a yoke, with which a draft animal pulls a vehicle or implement.
2. Something resembling such gear or tackle, as the arrangement of straps used to hold a parachute to the body.
3. A device that raises and lowers the warp threads on a loom.
4. Archaic Armor for a man or horse.
tr.v. har·nessed, har·ness·ing, har·ness·es
a. To put a harness on (a draft animal).
b. To fasten by the use of a harness.
2. To bring under control and direct the force of: If you can harness your energy, you will accomplish a great deal.
in harness
On duty or at work.

[Middle English harnes, from Old French harneis, of Germanic origin; see nes- in Indo-European roots.]

har′ness·er n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.harnessed - brought under control and put to use; "electricity from the harnessed Colorado River"; "the harnessed power of the atom"
controlled - restrained or managed or kept within certain bounds; "controlled emotions"; "the controlled release of water from reservoirs"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in classic literature ?
The cook's husband went into the house, which stood on an iron foundation and was iron-roofed, and soon returned saying that the little one was to be harnessed. By that time Nikita had put the collar and brass-studded belly-band on Mukhorty and, carrying a light, painted shaft-bow in one hand, was leading the horse with the other up to two sledges that stood in the shed.
Thus, before the first hint of the coming of gray day, camp was broken, sled loaded, dogs harnessed, and the two men crouched waiting over the fire.
And many a powerful one who wanted to run well with the people, hath harnessed in front of his horses--a donkey, a famous wise man.