Abbott-Smith Manual Greek Lexicon
πόνος (G4192)
4 πόνος , -ου, ὁ [in LXX for עָמָל , etc.;] labour , toil : Col 4:13 . The consequence of toil, distress , suffering , pain (Xen., al., LXX): Re 16:10 , 11 21:4 .† SYN. : v.s. κόπος .
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain