cryptoporticus
From LSJ
Ὀργῆς χάριν τὰ κρυπτὰ μὴ ἐκφάνῃς φίλου → Arcana amici ne per iram prodito → Geheimnisse des Freunds verrate nicht im Zorn
Ὀργῆς χάριν τὰ κρυπτὰ μὴ ἐκφάνῃς φίλου → Arcana amici ne per iram prodito → Geheimnisse des Freunds verrate nicht im Zorn
cryptŏportĭcus: ūs, f. vox hibrida, from κρυπτός and porticus,
I a covered gallery or passage, a vault, a hall, Plin. Ep. 2, 17, 16 sq.; 5, 6, 27 sq. al.