noun
plural -nesses
[count] a set of straps that are placed on an animal (such as a horse) so that it can pull something heavy
a set of straps that are used to connect a person to something (such as a parachute or a seat)
in harness
Brit :working at a job :on duty
verb
-nesses; -nessed; -nessing
[+ obj] to put a harness on (an animal)
to attach (an animal) to something with a harness
to use (something) for a particular purpose
to connect or join (things) together
US