The Collaborative International Dictionary of English v.0.48:

Merge \Merge\, v. i.
   To be sunk, swallowed up, or lost.
   [1913 Webster]

         Native irresolution had merged in stronger motives.
                                                  --I. Taylor.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

merge \merge\ (m[~e]rj), v. t. [imp. & p. p. Merged
   (m[~e]rjd); p. pr. & vb. n. Merging (m[~e]r"j[i^]ng).] [L.
   mergere, mersum. Cf. Emerge, Immerse, Marrow.]
   To cause to be swallowed up; to immerse; to sink; to absorb.
   [1913 Webster]

         To merge all natural . . . sentiment in inordinate
         vanity.                                  --Burke.
   [1913 Webster]

         Whig and Tory were merged and swallowed up in the
         transcendent duties of patriots.         --De Quincey.
   [1913 Webster]

WordNet (r) 3.0 (2006):

merge
    v 1: become one; "Germany unified officially in 1990"; "the
         cells merge" [syn: unify, unite, merge] [ant: break
         apart, disunify]
    2: mix together different elements; "The colors blend well"
       [syn: blend, flux, mix, conflate, commingle,
       immix, fuse, coalesce, meld, combine, merge]
    3: join or combine; "We merged our resources" [syn: unite,
       unify, merge]