hang up (v.)youdaoicibaDictYouDict[hang up 词源字典]
c. 1300, "suspend (something) so that it is supported only from above;" see hang (v.) + up (adv.); telephone sense by 1911. The noun hang-up "psychological fixation" is first attested 1959, from notion of being suspended in one place.[hang up etymology, hang up origin, 英语词源]