Duh. And it also means a normal 24 hour period.Genesis 2:17
but you must not eat from the tree of the knowledge of good and evil, for when you eat of it you will surely die."
Epoch of time.
After Adam ate the fruit he continued to live for nearly a thousand years until he finally died.
A day can be an epoch of time.
The meaning of day is determined by the context in which it is used. ALWAYS. Moses wrote in Genesis 1:5, "And there was evening, and there was morning, DAY ONE.
Meaning, ONE LITERAL 24-HOUR DAY, the first of it's kind.