Source : Webster's Revised Unabridged Dictionary (1913)

Coast \Coast\, v. i. [imp. & p. p. {Coasted}; p. pr. & vb. n.
   {Coasting}.] [OE. costien, costeien, costen, OF. costier,
   costoier, F. c[^o]toyer, fr. Of. coste coast, F. c[^o]te. See
   {Coast}, n.]
   1. To draw or keep near; to approach. [Obs.]

            Anon she hears them chant it lustily, And all in
            haste she coasteth to the cry.        --Shak.

   2. To sail by or near the shore.

            The ancients coasted only in their navigation.
                                                  --Arbuthnot.

   3. To sail from port to port in the same country.

   4. [Cf. OF. coste, F. c[^o]te, hill, hillside.] To slide down
      hill; to slide on a sled, upon snow or ice. [Local, U. S.]