Entry 1 sense Webster, 1913 Lier /(lī"ẽr)/ · Li·er · IPA /ˈlaɪ.ɚ/ 01 n. One who lies down; one who rests or remains, as in concealment. 1. One who lies down; one who rests or remains, as in concealment. “There were liers in a ambush against him.” — Josh. viii. 14.