koʊst kəʊst koʊst kəʊst ˈɡlaɪd ˈsiːʃɔː ˈsiːʃɔɹ ˈsiːʃo(ː)ɹ slaɪd 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 move effortlessly; by force of gravity the area within view the coast is clear a slope down which sleds may coast when it snowed they made a coast on the golf course the shore of a sea or ocean