Etymology of the Icelandic word rís

Cognates

Dutch rijst, Dutch rijs, Dutch riem, Dutch reus, English rice, English reef, English ream, French rame, French ris, French riz, German Reineke, German Riegelhaube, German Ries, German Reis, Icelandic hrísgrjón, Icelandic hrís, Icelandic risi, Italian riso, Italian ramo, Italian remo, Italian risma, Lithuanian ryžiai, Polish ryż, Portuguese riso, Portuguese arroz, Portuguese resma, Russian pиc, Spanish remo, Swedish ris, Swedish rese, Yiddish rajz