|1.||a restricting rope, chain, etc, by which an animal is tied to a particular spot|
|2.||the range of one's endurance, etc|
|3.||at the end of one's tether distressed or exasperated to the limit of one's endurance|
|4.||(tr) to tie or limit with or as if with a tether|
|[C14: from Old Norse tjothr; related to Middle Dutch tūder tether, Old High German zeotar pole of a wagon]|
see end of one's rope (tether).