Abbott-Smith Manual Greek Lexicon
μεσότοιχον (G3320)
1 *† μεσότοιχον , -ου, τό ( μέσος , τοῖχος ), a partition wall : Eph 2:14 (not elsewhere, but v. LS, s.v. μεσότοιχος ).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain