Dipping into Michael Inwood's Dictionary I came across this description of Dasein from GA 49:

Man is not transferred as Da-sein into an open realm as a pair of shoes is placed before the door of a room; as Da-sein man is the wandering abandonment into the open, whose openness and lighting is the world.

GA 49 contains the untranslated lectures from 1941 on Schelling and German Idealism.  ¶ 9:03 PM