Ur (root)
Ur is the Basque word for 'water'.
This root may be found in many place names and some derivates as:
- uharre / ugarre 'torrent'
- uhaitz / ugaitz 'torrential river' (French gave).
- urtz-◂ Ourse > Ousse, Urtzaran, Ossau Valley < valis ursaliensis (1127), Oursbelille
House names (thus family names)
- Uhalde or Ugalde, from ur alde 'water side'; Family names: Duhalde, Uhalt, Duhalt.
- Uharte or Ugarte, from ur arte 'between water' ('between two brooks'; 'island'); Family names: Duhart, Duarte'.
River names (thus village names)
- Urola, from ur ola 'hut of the water', coastal river in Azpeitia and Zumaia (Spain)
- Urrobi, from ur hobi 'water hole', tributary of the Irati River, in Navarre
- Ugaran, from ur haran 'water valley', in Zugarramurdi
- Uhabia, from ur habia 'water hole', coastal river in Bidart (France)
- Uhaneko erreka, right tributary of the Nive in Cambo-les-Bains
- Uhanki, brook in Saint-Michel
- Urontho (= Urondo) tributary of Ur Handia between Jatxou and Villefranque
- Ur Handia 'big brook', brooks in Larrau and tributary of the Ardanabia in Hasparren
- Ur Gaitza (Urgatxa) 'dangerous brook', tributary of the Ardanabia in Urcuit
- Ur Ona (Uroneko erreka) 'good water', brook in Ahetze
- Ur Xuria (Urtxuria) 'white water', tributary of the Irati River from the Larrau Pass
- Ur Beltza, Ur Beltxa 'black water', brook in Aldudes
- Urepel 'tepid water', commune of the Pyrénées-Atlantiques
- Urcuray, river and village of the commune of Hasparren
and probably: