Eighth Amendment of the Constitution of Ireland
The Eighth Amendment of the Constitution Act 1983 was an amendment to the Constitution of Ireland which inserted a subsection recognising "the equal right to life of the pregnant woman and the unborn". Abortion had been subject to criminal penalty in Ireland since at least 1861; the amendment ensured that legislation or judicial interpretation would be restricted to allowing abortion in circumstances where the life of a pregnant woman was at risk.
Source: Wikipedia — Eighth Amendment of the Constitution of Ireland (CC BY-SA 4.0)