Definition of: coast

(kōst) noun
1. The land next to the sea; the seashore.
2. Obs. A region; boundary: used chiefly in the plural.
3. A slope suitable for sliding, as on a sled; also, a slide down it.
—the Coast U.S. That part of the United States bordering on the Pacific Ocean.
—the coast is clear There is no danger or difficulty now.
—v.t.
1. To sail or travel along, as a coast or border.
—v.i.
2. To sail or travel along a coast or littoral, keeping in sight of land; to travel from port to port along a coast.
3. To slide or ride down a slope by force of gravity alone, as on a sled or bicycle.
4. To continue moving on momentum after the source of power has been stopped.
5. To move or behave aimlessly. [<OF coste <L costa rib, flank]