羝 ㄉㄧ dī 羊 ㄧㄤ ˊ yáng 触 ㄔㄨ ˋ chù 藩 ㄈㄢ fān 羝 ㄉㄧ dī 羊 ㄧㄤ ˊ yáng 觸 ㄔㄨ ˋ chù 藩 ㄈㄢ fān lit. billy goat's horns caught in the fence (idiom from Book of Changes 易經|易经); impossible to advance or to retreat without any way out of a dilemma trapped in an impossible situation