The term 'BIG WAVE' can be broken down into eight crossword solutions: ROLLER (6 letters), TSUNAMI (7 letters), SEA (3 letters), SWELL (5 letters), TIDAL (5 letters), WHITECAP (8 letters), PERM (4 letters), and COMBER (6 letters). A ROLLER is a large wave that breaks over a shallow area, while a TSUNAMI is an extremely large wave caused by an underwater earthquake or landslide. A SWELL is a large wave that has traveled from its source, such as a storm, and a TIDAL wave is a wave caused by the gravitational pull of the moon and sun. A WHITECAP is a wave with a white crest, and a perm is a long-lasting wave. Finally, a COMBER is a wave that breaks against the shore. Oceanswell is a combination of all these terms, referring to a large wave in the ocean.