περικεφαλαία, περικεφαλαίας, ἡ (περί and κεφαλή), a helmet: 1 Thessalonians 5:8; τοῦσωτηρίου (from Isaiah 59:17), i. e. dropping the figure, the protection of soul which consists in (the hope of) salvation, Ephesians 6:17. (Polybius; the Sept. for כּובַע.)