coaster
意味
- 沿岸貿易船
- (子供用)滑降ぞり
- (コップなどの下に置く)敷き皿,下敷き
- 《米》=roller coaster
例文
I got sick riding the roller coaster with the loop-the-loop.
宙返りするジェットコースターに乗ったら、気持ち悪くなっちゃった。
Tom rode the roller coaster.
トムはロケットコースターに乗った。
Roller coasters are scary.
ジェットコースターは怖いな。
語源
英語の原文（Wiktionary）
From coast (“edge of the land where it meets an ocean, sea, gulf, bay, or large lake”) + -er (suffix forming agent nouns). Coast is derived from Middle English coste (“rib; side of the body, flank; side of a building; face of a solid figure; coast, shore; bay, gulf; sea; concavity, hollow; boundary, limit; land; country; district, province, region; locality, place; division of the heavens; compass direction; direction; location with reference to direction, side”) [and other forms], from Old French coste (“rib; side of an object; coast”) (modern French côte (“rib; coast; hill, slope”)), from Latin costa (“rib; side, wall”).