Definition of: harness

(här′nis) noun
1. The combination of traces, straps, and other pieces forming the gear of a draft animal and used to attach it for work to a wheeled vehicle or plow.
2. Archaic The defensive armor of a soldier or of his horse.
3. Any arrangement of straps, cords, etc., as for lifting or performing some mechanical operation.
4. A device on a loom comprising the heddles which shift the sets of warp threads alternately.
5. The routine or obligations of work or business.
—v.t.
1. To put harness on, as a horse.
2. To make use of the power or potential of: to harness a waterfall.
3. Archaic To dress in or equip with armor. [<OF harneis; ult. origin unknown]
—har′ness·er noun