coasterKK [ˋkostɚ] /ˈkoʊstɚ/名詞1杯墊Please put your glass on a coaster to protect the table.請把杯子放在杯墊上,以免弄壞桌面。2雲霄飛車口語That new coaster has three loops and a huge drop.那座新的雲霄飛車有三個迴旋和一段超大落差。3沿海貨船、沿海航行船隻A small coaster was unloading cement at the old dock.一艘小型沿海貨船正在舊碼頭卸水泥。4混日子的人、不出力的人貶義He's a coaster who lets the rest of the team do everything.他就是個混日子的人,什麼都讓其他組員做。