lying (n.1)youdaoicibaDictYouDict[lying 词源字典]
early 13c., action of lie (v.2) "to recline." Lying-in "being in childbed" is attested from mid-15c.[lying etymology, lying origin, 英语词源]
lying (n.2)youdaoicibaDictYouDict
c. 1300 (n.), action of lie (v.1) "to tell an untruth." As a past participle adjective, from 1530s.