Definition of "Coast" :

noun: the act of moving smoothly along a surface while remaining in contact with it

"The children lined up for a coast down the snowy slope."

noun: the area within view

"The coast is clear."

noun: a slope down which sleds may coast

"When it snowed they made a coast on the golf course."

noun: the shore of a sea or ocean

verb: move effortlessly; by force of gravity