BT Ket 54a(30) :נהרדעא וכל פרוארהא נהוג כשמואל‏ : GN and all its environs follow the practice of PN
See the entire entry for parwār, parwārā n.m. courtyard

BT Ket 54a(30) :בבל וכל פרוארהא נהוג כרב נהרדעא וכל פרוארהא נהוג כשמואל‏ : Babylon and all of its surrounding areas followed the practice of Rav, Nehardea and all its environs followed the practice of Shmuel
See the entire entry for prwr#2 n.m. outlying area