Source : Webster's Revised Unabridged Dictionary (1913)

Launch \Launch\, n.
   1. The act of launching.

   2. The movement of a vessel from land into the water;
      especially, the sliding on ways from the stocks on which
      it is built.

   3. [Cf. Sp. lancha.] (Naut.) The boat of the largest size
      belonging to a ship of war; also, an open boat of any size
      driven by steam, naphtha, electricity, or the like.

   {Launching ways}. (Naut.) See {Way}, n. (Naut.).