テザー

noun

tether

A rope, chain, or similar restraint that limits the movement of an animal or object. Used in both literal and figurative contexts.

• 犬いぬをテザーでつないでおく。

  I keep the dog tied with a tether.

• 宇う宙ちゅう飛ひ行こう士しはテザーで船せん外がい活かつ動どうを行おこなう。

  Astronauts perform spacewalks using a tether.