Abbott-Smith Manual Greek Lexicon
συν-κάμπτω (G4781)
1 συν-κάμπτω (Rec. συγκ- ), [in LXX: Ps 68:10 , 23 ( מעד hi.), etc. ;] to bend completely, bend together : τ. νῶτον , fig., Ro 11:10 (LXX) .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain