The periodic variation in the surface level of the oceans and of bays, gulfs, inlets, and estuaries, caused by gravitational attraction of the moon and sun.
파생어
betide [동] tidal [형]
예문
1. springtide (봄) 2. noontide (한낮) 3. Christmastide (크리스마스제) 4. a tide of blood (흘러나오는 피)
