lying (n.1) Look up lying at Dictionary.com
early 13c., action of lie (v.2) "to recline." Lying-in "being in childbed" is attested from mid-15c.
lying (n.2) Look up lying at Dictionary.com
c.1300 (n.), action of lie (v.1) "to tell an untruth." As a past participle adjective, from 1530s.