tether Definition

tether
noun

1. A rope or chain for tying an animal to a post or confining it to a particular spot.

verb

tethered, tethering
1. To tie or restrain with a tether.

Thesaurus: restrain, fetter, secure, bind, lash, fasten, tie, manacle, shackle.

Idiom: at the end of one's tether

Having reached the limit of one's patience, strength or mental resources, etc.
Thesaurus: desperate, hopeless, in despair, at the end of one's rope (US), at one's wit's end.

Etymology: 14c: from Norse tjothr.