δια-ζώννῡμι · dia-zōnnymi — LSJ
gird round, encircle, embrace, undergird oneʼs, gird oneself with, wearing the διάζωμα I, invested with
gird round, encircle, embrace, Gal. 14.715: metaph., τὸν ὅλον ἄνθρωπον διέζωσεν [ἡ ψυχή] Diog.Oen. 39:—Med., undergird oneʼs ship, App. BC 5.91; but usu. gird oneself with, διαζωσάμενοι τὸ τριβώνιον Luc. Hist.Conscr. 3:—Pass., διαζώννυσθαι ἐσθῆτα, ἀκινάκην, Id. Somn. 6, Anach. 6: abs., διεζωσμένοι wearing the διάζωμα I, Th. 1.6 codd. (-ζωμένοι Phot., Suid.): metaph., ἀρχὴν διεζωσμένος invested with office, J. AJ 14.9.3.
II engirdle, encompass, pass like a girdle
metaph., engirdle, encompass, of fire, Plu. Brut. 31; τὸν αὐχένα (i.e. the Chersonese) δ. ἐρύμασι Id. Per. 19; νήσους Id. Them. 12:—Pass., [ἡ Ἀττικὴ] μέση διέζωσται ὄρεσιν X. Mem. 3.5.25; ῥάχει διεζῶσθαι Plb. 5.69.1; also pass like a girdle, διὰ τῶν τροπικῶν Arist. Mu. 392a12.