Source : Webster's Revised Unabridged Dictionary (1913)

Seashore \Sea"shore`\, n.
   1. The coast of the sea; the land that lies adjacent to the
      sea or ocean.

   2. (Law) All the ground between the ordinary highwater and
      low-water marks.

Source : WordNet®

seashore
     n : the shore of a sea or ocean [syn: {coast}, {seacoast}, {sea-coast}]