noun

• A person who originates from or inhabits a coastal area.
• (slang, dated) A prostitute, especially one of European descent, plying her trade in Chinese port towns.
• (nautical)
• A sailor (especially the master or pilot of a vessel) who travels only in coastal waters.
• A merchant vessel that stays in coastal waters, especially one that travels between ports of the same country.
• (US) A cow from the coastal part of Texas.
• Agent noun of coast: one who coasts.
• (Australia, slang) An itinerant person who shirks work but still seeks food and lodging; a loafer, a sundowner.
• (US, winter sports) A person who uses a sled or toboggan to slide down a slope covered with ice or snow; a sledder, a tobogganist.
• One who succeeds while making only a minimal effort.
• Something that coasts or is used to coast.
• (dated) A small stand or tray, sometimes with wheels, used to pass something such as a decanter or wine bottle around a tabletop.
• (by extension)
• A small, flat or tray-like object on which a bottle, cup, glass, mug, etc., is placed to protect a table surface from drink spills, heat, or water condensation.
• (computing, slang) A useless compact disc or DVD, such as one that was burned incorrectly or has become corrupted.
• (US, winter sports) A sled or toboggan.
• (Canada, US) Short for coaster trout (“the brook trout (Salvelinus fontinalis) in Lake Superior and Maine”).
• (US, informal) Short for rollercoaster. [An amusement ride consisting of a buggy on a track that rises, falls, twists and turns.]