The Collaborative International Dictionary of English v.0.48:

Morse \Morse\, n. [F. morse, Russ. morj'; perh. akin to E. mere
   lake; cf. Russ. more sea.] (Zool.)
   The walrus. See Walrus.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Morse \Morse\, n. [L. morsus a biting, a clasp, fr. mordere to
   bite.]
   A clasp for fastening garments in front. --Fairholt.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Walrus \Wal"rus\, n. [D. walrus; of Scand. origin; cf. Dan
   valros, Sw. vallross, Norw. hvalros; literally, whale horse;
   akin to Icel. hrosshvalr, AS. horshwael. See Whale, and
   Horse.] (Zool.)
   A very large marine mammal (Trichecus rosmarus) of the Seal
   family, native of the Arctic Ocean. The male has long and
   powerful tusks descending from the upper jaw. It uses these
   in procuring food and in fighting. It is hunted for its oil,
   ivory, and skin. It feeds largely on mollusks. Called also
   morse.
   [1913 Webster]

   Note: The walrus of the North Pacific and Behring Strait
         (Trichecus obesus) is regarded by some as a distinct
         species, by others as a variety of the common walrus.
         [1913 Webster]

WordNet (r) 3.0 (2006):

Morse
    n 1: a telegraph code in which letters and numbers are
         represented by strings of dots and dashes (short and long
         signals) [syn: Morse, Morse code, international Morse
         code]
    2: United States portrait painter who patented the telegraph and
       developed the Morse code (1791-1872) [syn: Morse, Samuel
       Morse, Samuel F. B. Morse, Samuel Finley Breese Morse]