What Does “Original sin” Mean in the Bible?
The sin of Adam and Eve, whose wound we all inherit at birth. Baptism frees us from it.
Where it appears in the Bible
Genesis 3:6; Romans 5:12
What the Bible says
Genesis 3:6
And the woman saw that the tree was good to eat, and fair to the eyes, and delightful to behold: and she took of the fruit thereof, and did eat, and gave to her husband who did eat.
Romans 5:12
Wherefore as by one man sin entered into this world, and by sin death; and so death passed upon all men, in whom all have sinned.
Douay-Rheims Bible (Challoner revision), public domain.
Source: Catechism 404 and 417-419