θυρεός, -οῦ, ὁ (θύρα), [in LXX for מָגֵן, צִנָּה;] 1) in Hom, a door-stone. 2) In late Gk. (Polyb, Plut.),
the scutum, a large oblong shield: θ. τ. πίστεως, Eph.6:16 (cf. Wis.5:20, where ὁσιότης is likened to the ἀσπίς, the clypeus or small round shield of the light-armed soldier). (
AS)