The Collaborative International Dictionary of English v.0.48:
Coast \Coast\ (k[=o]st), 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.
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.]