Proto-Altaic: *ót`ó(rV)
Meaning: bushes, low trees
Russian meaning: кустарник, низкие деревья
Comments: The meanings 'island' and 'forest, bushes' are frequently associated in Altaic, so the etymology on the whole seems quite plausible. Note the common derivative *ót`ó-rV reflected in PT *ot-ru-g, Orok ute-ri-kte and PJ *ǝ́ntǝ́rǝ́.