To go out of, or away from. Such as leaving the house; to go elsewhere.
I should be leaving any moment now.
by Dreams1657 June 19, 2008
When leaves fall off of trees; the act of leaves leaving trees during the season of Autumn; trees letting go of their leaves.
There's a chill in the air, the trees are thinning and leaving.
by thedimes February 04, 2010