Etymology

From Proto-Iranian (compare Persian خور ‎(chor, chwar), Kurdish xor, xur, Ossetian хур ‎(xur)), from Proto-Indo-Iranian *súHr̥ (compare Sanskrit स्वर् ‎(svàr), सूर्य ‎(sū́rya)), ultimately from Proto-Indo-European *sóh₂wl̥.