coast
noun
the shore of a sea or ocean
a slope down which sleds may coast
“when it snowed they made a coast on the golf course”
the area within view
“the coast is clear”
the act of moving smoothly along a surface while remaining in contact with it
“his slide didn't stop until the bottom of the hill”
“the children lined up for a coast down the snowy slope”
verb
move effortlessly; by force of gravity
Source: WordNet 3.1, Princeton University