氷ひょう塔とうひょうとうMeanings1nounseracA block or pinnacle of ice on a glacier, formed by intersecting crevasses. Technical term used in glaciology and mountaineering.氷ひょう河がの上うえに巨きょ大だいな氷ひょう塔とうがそびえていた。A huge serac towered over the glacier.