tether (subs.) Copy link • tether (subs.): rĕtĭnācŭlum (usu. in pl.): to fasten the t. of the mule to a stone, retinacula mulae saxo religare, Hor. S. 1, 5, 18: or vincŭlum: the flight of the beasts of burden as they break their t.s, fuga abrumpentium vincula jumentorum, Liv. 26, 6: for the fig. and prov. sense see limit.