the gear of a draught animal other than a yoke
archaic military equipment for a knight
something that resembles a harness, e.g. in holding or fastening something
a safety harness
the part of a loom that holds and controls the heddles (wires with eyes through which the warp threads pass; see heddle)
in harness
in one's usual work, surroundings, or routine
back in harness after a long illness
in close association
working in harness with a group of colleagues
[Middle English herneis baggage, gear, from Old French harneis, ultimately from old Norse herr army + nest provisions]