Meaning of 箍 in Japanese

Definition of 箍

たが(taga) 【箍】

たがをしめる(tagawoshimeru) 【箍を締める】

たがをはめる(tagawohameru) 【箍を嵌める】

りせいのたが(riseinotaga) · りせいのタガ(riseinotaga) 【理性のタガ ·理性の箍 ·理性のたが】

(exp) the bounds of reason; the limits of (common) sense
たまには理性のタガを外してみませんか。
Why not just let fly once in a while?

たががはずれる(tagagahazureru) · タガがはずれる(tagagahazureru) 【たがが外れる ·タガが外れる ·箍が外れる】

(exp, v1, vi) to become unrestrained and go to excess; to lose all restraint; to lose one's tension and become relaxed; to let go; to become disorderly; to be scattered; to lose one's self-control