Proto-IE: *per- <PIH *-rH->
Meaning: to put across, to ferry
Hittite: parh- (I) 'hetzen, treiben, jagen' (Friedrich 159)
Old Indian: píparti , caus. pāráyati `to bring over, bring out, save, protect, escort, promote', inf. parṣáṇi; pārá- `bringing across', m., n. `the further bank, the opposite side', partŕ̥bhis `with aids, helpfully'
Avestan: par- `hindurch-, hinübergehen'; pāra- m. `Ufer; Grenze, Ende'; pǝrǝtu- m./f. (*pŕtu-), pǝšu- m. (< prtú-) `Durchgang, Furt, Brücke'
Armenian: hord `begangen, betreten', hordan `fortgehen', hordantam `lasse fortgehen, bringe vorwärts', heriun `Pfrieme'
Old Greek: póro-s m. `Durchgang, Furt, Meerenge, Fahrt, Weg, Strasse; Mittel, Ausweg'; pl. `Einkünfte', poréu̯ō, -omai̯ `fahren, verschaffen', porthmó-s m. `Überfahrt (-sort, -sweg), Meerenge, Sund'
Latin: portāre `tragen; ertragen, aushalten'; portus, -ūs m. `Hauseingang; Seeeinfahrt, Hafen; Zuflucht; Niederlage'; angiportus, -ūs m., angiportum n. `enges Nebengässchen, Sackgasse', porta f. `Tor, Türe'
Other Italic: Umbr portatu `portātō', ft II portust `portāverit', portaia `portet';
Celtic: *hrtu-: Gaul ritu- `Furt': Ritumagus, Augustoritum; Ir rith: Humar-rith; OCymr rit, NCymr rhyd `Furt', Corn rit `Furt'
Russ. meaning: переправляться на ту сторону, за границу etc.
References: WP II 39 f
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