tether

中文： 拴绳、系链、极限

1. A rope, cable etc. that holds something in place whilst allowing some movement.
2. The limit of one's abilities, resources, patience, etc. (figuratively) · Since his hours have increased, I feel that he is at the end of his tether.
3. An attachment to a place, time, entity or person. (figuratively) · Despite moving, he maintained a strong tether to his culture back home.
4. A strong rope or line that connects a sailor's safety harness to the boat's jackstay.

复数 tethers