oceans

n. one of the large bodies of water covering the Earth (i.e. Atlantic, Pacific, Indian, Arctic, and Antarctic Oceans); large quantity; great distance

An ocean (from , Okeanos (Oceanus) in Greek) is a major body of saline water, and a principal component of the hydrosphere. Approximately 71% of the Earth's surface (an area of some 361 million square kilometers) is covered by ocean, a continuous body of water that is customarily divided into several principal oceans and smaller seas. More than half of this area is over 3,000 meters (9,800 ft) deep. Average oceanic salinity is around 35 parts per thousand (ppt) (3.5%), and nearly all seawater has a salinity in the range of 31 to 38 ppt.
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Noun
1. a large body of water constituting a principal part of the hydrosphere
(hypernym) body of water, water
(hyponym) Antarctic Ocean
(part-holonym) hydrosphere
(class) body of water, water
2. anything apparently limitless in quantity or volume
(synonym) sea
(hypernym) large indefinite quantity, large indefinite amount

n. ocean, one of the large bodies of water covering the Earth (i.e. Atlantic, Pacific, Indian, Arctic, and Antarctic Oceans)

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Lamenting one's inadequacy before a vast ocean.
Describing something that is in sight but beyond reach, or someone who knows that he is not as good as others.