bank, beach, coast, shore, seaside

名詞 coast:

1. the shore of a sea or ocean
   同義詞：seashore, seacoast, sea-coast
2. a slope down which sleds may coast
3. the area within view
4. the act of moving smoothly along a surface while remaining in contact with it
   同義詞：slide, glide

動詞 coast:

1. move effortlessly; by force of gravity

1. He is going to live by the coast for the sake of his health.
   他為了自己的健康，打算到海濱地區(qū)去居住。
2. Spray slaps the coast ceaselessly.
   海浪不停地拍打著海岸。
3. The disabled ship coasted the island, looking for a harbor.
   那艘損壞的船只在海島沿岸航行以尋找港口。
4. Fishing boats were anchored all along the coast.
   漁船沿著岸拋錨停泊。

coast

n.（名詞）

Land next to the sea; the seashore.
海岸：接近大海的陸地；海濱
Coast The Pacific Coast of the United States.
Coast 美國的太平洋海岸
A hill or other slope down which one may coast, as on a sled.
下滑的斜坡：可以乘雪橇順著滑下的小山或斜坡
The act of sliding or coasting; slide.
滑下，溜下：滑動或滑行的動作；滑動
Obsolete The frontier or border of a country.
【廢語】 邊界，邊境：國家的邊界或邊境
v.（動詞）
coast.ed,coast.ing,coasts
v.intr.（不及物動詞）

To slide down an incline through the effect of gravity.
溜下：因重力作用沿斜面滑下
To move effortlessly and smoothly.See Synonyms at slide
滑行：不費勁地平滑地移動參見 slide
To move without further use of propelling power.
順勢滑下：無需進一步使用推力來運動
To act or move aimlessly or with little effort:
輕松漫游：無目的地或用很小力的作用或運動：
例句：
coasted for a few weeks before applying for a job.
在找工作之前先輕松的玩幾周

Nautical To sail near or along a coast.
【航海】 沿著海岸航行：沿著或接近海岸在海上航行
v.tr.Nautical （及物動詞）【航?！?/i>
To sail or move along the coast or border of.
使沿著海岸航行：沿著海岸或邊界航行或移動

來源：
Middle English coste
中古英語 coste
from Old French
源自 古法語
from Latin costa [side] * see kost-
源自 拉丁語 costa [旁邊] *參見 kost-

【引伸】
coast.al