The Collaborative International Dictionary of English v.0.48:

Ending \End"ing\, n.
   1. Termination; concluding part; result; conclusion;
      destruction; death.
      [1913 Webster]

   2. (Gram.) The final syllable or letter of a word; the part
      joined to the stem. See 3d Case, 5.
      [1913 Webster]

   Ending day, day of death. --Chaucer.
      [1913 Webster]