The Collaborative International Dictionary of English v.0.48:

Coming \Com"ing\, n.
   1. Approach; advent; manifestation; as, the coming of the
      train.
      [1913 Webster]

   2. Specifically: The Second Advent of Christ, called usually
      the second coming.
      [1913 Webster]

   Coming in.
      (a) Entrance; entrance way; manner of entering; beginning.
          "The goings out thereof, and the comings in thereof."
          --Ezek. xliii. 11
      (b) Income or revenue. "What are thy comings in?" --Shak.
          [1913 Webster]

WordNet (r) 3.0 (2006):

Second Coming
    n 1: (Christian theology) the reappearance of Jesus as judge for
         the Last Judgment [syn: Second Coming, Second Coming of
         Christ, Second Advent, Advent, Parousia]