From Proto-Turkic *kapïrčak (“box, coffin”). <span class="searchmatch">куорчах</span> • (kuorcaq) a dugout coffin a protective frame for the coffin...
(“box, coffin”) or Proto-Mongolic *kaxurcag~kayircag. Cognate to Yakut <span class="searchmatch">куорчах</span> (kuorcaq), etc. каарчак • (kaarčak) box, chest N. A Baskakov, editor (1966)...