袋ふくろのネズミふくろのねずみじ字FuriganaMeanings1expression, nountrapped with no way out; rat in a bagIdiomatic expression describing a situation where someone is cornered or has no escape. The literal image is a rat trapped in a bag.警けい察さつに囲かこまれて、犯はん人にんは袋ふくろのネズミだった。