tether

Definitions:

A rope or chain by which a beast is confined to certain limits while feeding; anything by which one is restrained.
- Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874. (noun) (n.) (noun)
To confine by a rope; to restrain within certain limits.
- Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874. (verb) (v.) (verb)
To confine with a tether: to restrain within certain limits.
- The american dictionary of the english language. By Daniel Lyons. Published 1899. (verb) (v. t.) (verb transitive)
A rope to fasten an animal.
- The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919. (noun) (n.) (noun)
To confine, as an animal, by the length of a rope.
- The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919. (verb) (v. t.) (verb transitive)
A rope or chain for tying a beast in the field.
- The Clarendon dictionary. By William Hand Browne, Samuel Stehman Haldeman. Published 1894. (noun) (n.) (noun)
To confine with a tether; restrain.
- The Clarendon dictionary. By William Hand Browne, Samuel Stehman Haldeman. Published 1894. (verb) (v. t.) (verb transitive)
A rope or chain by which a beast is confined for feeding within certain limits.
- Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914. (noun) (n.) (noun)
A rope or chain for tying: a beast, while feeding, within certain limits.
- The american dictionary of the english language. By Daniel Lyons. Published 1899. (noun) (n.) (noun)
To confine, as a beast, with a tether.
- Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914. (verb) (v.) (verb)

Usage examples:

Can you realize what it is to be at the very end of one's tether
- The Peace of Roaring River by George van Schaick
Peter walked back and forth, a short tether
- Rose MacLeod by Alice Brown
You and I, continued Lord Alston, without apparent attention to the last words which Sir Peregrine had spoken, have nearly come to the end of our tether here.
- Orley Farm by Anthony Trollope