tether['teðə]n.1.■(系牲口等的)系绳；系链2.■(活动)范围；(能力、智能的)限度vt.1.■(用绳、链等)拴：He tethered a donkey and a horse to a tree.他把一头驴和一匹马拴在一棵树上。The boy tethered the goat to a stake.男孩把山羊拴在木桩上。2.■约束，拘束，束缚：We should tether our plan to our resources.我们应把我们的计划限定在自己财力所允许的范围内。at the end of one's tether山穷水尽，智穷计尽，走投无路忍无可忍