From Japanese-English FreeDict Dictionary ver. 0.1:
独鈷 /(en)tʃˈaɪniːz(ja)lˈe̞tə (en)tʃˈaɪniːz(ja)lˈe̞tə/, 独古 /(en)tʃˈaɪniːz(ja)lˈe̞tə (en)tʃˈaɪniːz(ja)lˈe̞tə/, 独股 /(en)tʃˈaɪniːz(ja)lˈe̞tə (en)tʃˈaɪniːz(ja)lˈe̞tə/, とっこ /tˈo̞kko̞/, どっこ /dˈo̞kko̞/ 1. (noun (common) (futsuumeishi)) [Buddhist term] single-pronged vajra, tokko, dokko, copper or iron implement, pointed at both ends, used in esoteric Buddhist rituals 2. cloth of a tokko pattern