'Leaf' in the Bible

Then he brought me to the porch of the temple, and he measured each side pillar of the porch, five cubits on each side; and the width of the gate was three cubits on each side.

And by the river upon the bank thereof, on this side and on that side, shall grow all trees for meat, whose leaf shall not fade, neither shall the fruit thereof be consumed: it shall bring forth new fruit according to his months, because their waters they issued out of the sanctuary: and the fruit thereof shall be for meat, and the leaf thereof for medicine.