羝羊觸藩 [ㄉㄧ ㄧㄤˊ ㄔㄨˋ ㄈㄢ; di1 yang2 chu4 fan1] lit. billy goat's horns caught in the fence (idiom from Book of Changes 易經); impossible to advance or to retreat without any way out of a dilemma trapped in an impossible situation ◄ ►