Ocean swell is a term used to describe the large waves that are created by strong winds in the ocean. The crossword solutions for this term are WAVE (4 letters), SEA (3 letters), and SEAGATE (7 letters). Wave is a term used to describe the movement of water in an ocean or SEA, while SEA is a large body of salt water. Seagate is a term used to describe a narrow passage of water connecting two larger bodies of water.