harnessed (Adjective) — Brought under control and put to use. ex. "electricity from the harnessed Colorado River" ex. "the harnessed power of the atom"
harnessed (Verb) — (animal husbandry) put a harness. ex. "harness the horse"
harnessed (Verb) — Exploit the power of. ex. "harness natural forces and resources"
harnessed (Verb) — Control and direct with or as if by reins. ex. "harness a horse"
harnessed (Verb) — Keep in check. ex. "harness one's temper"