Fenestro, fenestras, fenestrâre. Plini. To open: to make a windowe.
Lewis and Short: Latin dictionary
fĕnestro, āvi, ātum, 1, v. a. [fenestra], to furnish with openings or windows (rare; not in Cic.). I.Lit.: media oculorum cornua fenestravit pupilla, Plin. 11, 37, 55, 148. —In part. perf.: valvata ac fenestrata triclinia, Varr. L. L. 8, 29 Müll.: singulae partes turris, Vitr. 10, 19 med.— II.Trop.: oportuit hominum pectora fenestrata et aperta esse, Vitr. 3 praef.