The Oxford Thesaurus An A-Z Dictionary of Synonyms - ocean n.

1) (deep blue) sea, (bounding) main, high seas, the deep, Davy Jones's locker, the depths, Colloq the briny, the drink: The sails filled, and our tiny craft was swept out into the open ocean. 2) Often, oceans. flood, abundance, multitude, profusion, plethora, Colloq scads, loads, tons, lots, oodles, gobs, zillions: The direct mail campaign yielded oceans of responses.