noun

1. land alongside the sea; seashore
2. Obsolete frontier; borderland
3. ☆

   Etymology: < CdnFr, hillside, slope

   an incline down which a slide is taken
4. ☆ a slide or ride, as on a sled going down an incline by the force of gravity

Etymology: ME coste, coast < OFr, a rib, hill, shore, coast < L costa, a rib, side

intransitive verb

1. to sail near or along a coast, esp. from port to port
2. ☆ to go down an incline, as on a sled
3. ☆ to continue in motion on momentum or by the force of gravity after propelling power has stopped
4. ☆ to continue without serious effort, letting one's past efforts carry one along

transitive verb