Etymology tree Latin costa Latin costicāreder. Old French costoierbor. Middle English costeien English coast Proto-Indo-European *-yósder. Proto-Italic *-āzios Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English coaster From coast (“to glide along without adding energy; to make a minimal effort; to slide downhill (especially, to slide on a sled upon snow or ice)”) + -er (suffix forming agent nouns). Coast is derived from Middle English costeien (“to travel along a border or coast; to go alongside (something), skirt; to accompany, follow; to travel across, traverse; to be adjacent to, to border;”) [and other forms], from Anglo-Norman [Term?], Old French costoier (“to be at the side of”) [and other forms] (modern French côtoyer (“to pass alongside; (figuratively) to rub shoulders”)), from Latin costicāre, from costa (“rib; side, wall”); see further at etymology 1. etymology 2 sense 2.1 (“small stand or tray”) is from the fact that the object and the decanter or wine bottle on it “coast” or travel around a tabletop from person to person. etymology 2 sense 2.2.2 (“useless compact disc or DVD”) refers to the fact that the object is only useful as a drink coaster. etymology 2 sense 2.5 (“minibus”) is a genericized trademark from Toyota Coaster. Compare Spanish coaster / cúster.

beermat • beer mat • American brook char • beau • broad • brook trout • coasting vessel • coasting/coastal vessel • courtesan • creature of the night • drab • harlot • hedge whore • hoe • lady of the evening • mermaid • minx • nun • painted lady • pug • punk • rantipole • rollercoaster • streetwalker • trull • wanton