restraint consisting of a rope (or light chain) used to restrain an animal
Verb
tie with a tether;
"tether horses"
例句
用作名词(n.)
The astronauts walked in outer space without a tether.宇航员在没有系绳的情况下进行太空行走。
This group is composed of men who had never associated themselves with rickshaws but were forced to take up the trade, because they have reached the end of their tether.这一些是以前决没想到自己能与洋车发生关系，而到了生和死的界限已经不甚分明，才抄起车把来的。
