phantasma
From LSJ
θοῦ, Κύριε, φυλακὴν τῷ στόµατί µου καὶ θύραν περιοχῆς περὶ τὰ χείλη µου → set a guard over my mouth, Lord; keep watch over the door of my lips | set a guard, O Lord, over my mouth; keep watch over the door of my lips (Psalm 140:3, Septuagint version)
Latin > English (Lewis & Short)
phantasma: ătis, n., = φάντασμα>.
I An apparition, spectre, phantom (postAug.; cf.: idolon, imago, simulacrum): velim scire, esse phantasmata et habere figuram ... an inania, etc., Plin. Ep. 7, 27, 1: si phantasma fuit Christus, Tert. adv. Marc. 5, 7; Vulg. Matt. 14, 26; id. Marc. 6, 49.—
II In gen., an image, appearance, phantasm of an object (late Lat. for visum, imago, species): Alexandriam cum eloqui volo, quam nunquam vidi, praesto est apud me phantasma ejus, Aug. Trinit. 8, 6.