subvesperus
From LSJ
λέγεται δὲ καὶ κλῶνας αὐτῆς θύραις ἢ θυρίσι προστεθέντας ἀποκρούειν τὰς τῶν φαρμάκων κακουργίας → its branches attached to doors or windows are said to repel the evil of spells
sub-vespĕrus: i, m. (sc. ventus),
I the southwest-by-west wind, Vitr. 1, 6, 10.