punishment by fist; corporal punishment or, figuratively, a severe/hard-line punitive action.
現代では学校での鉄拳制裁は許されない。
In modern times, corporal punishment in schools is not allowed.
経営陣は不正発覚に対し鉄拳制裁を加えた。
Management imposed severe punitive measures when fraud was uncovered.
昔は親が子に対して鉄拳制裁を行うことがあった。
In the past, parents sometimes resorted to corporal punishment of their children.