ocean

noun4

1. •
   a huge body of salt water that separates large parts of the world, much bigger than a sea
2. •
   Water belonging to an ocean.

   • The island is surrounded by ocean
3. •
   (figurative) An immense expanse; any vast space or quantity without apparent limits.

   • Poison Ivy, Lord,'ll make you itch You're gonna need an ocean Of calamine lotion You'll be scratchin' like a hound The minute you start to mess around — 1959
4. •
   A blue colour, like that of the ocean (also called ocean blue).