Definition of harnesses:
(n) :
(countable) A restraint or support, especially one consisting of a loop or network of rope or straps, and especially one worn by a working animal such as a horse pulling a carriage or farm implement.
(n) :
(countable) A collection of wires or cables bundled and routed according to their function: a wiring harness.
(n) :
(dated, uncountable) The complete dress, especially in a military sense, of a man or a horse; armour in general.
(n) :
The part of a loom comprising the heddles, with their means of support and motion, by which the threads of the warp are alternately raised and depressed for the passage of the shuttle.
(n) :
Equipment for any kind of labour.
(v) :
(transitive) To place a harness on something; to tie up or restrain.