yarmulke UK /ˈjɑːməlkə/US /ˈjɑ(ɹ)mə(l)kə/ noun1 •(Judaism) A skullcap worn by religious Jewish males (especially during prayer).But once Dr. Levenson, who works for the Indian Health Service and wears a colorful tapestry yarmulke, has alerted the tiny network, it almost seems as if we have stepped into Yiddishland. — 2007 formsyarmulkes