blue

blue

noun

Definition of BLUE

1

the expanse of air surrounding the earth <the plane flew off into the blue and was never seen again>

Synonyms blue, firmament, heaven(s), high, welkin

Related Words midair; horizon, skyline

2

the whole body of salt water that covers nearly three-fourths of the earth <pirate ships that sailed the vasty blue in search of treasure>

Synonyms blue, brine, deep, Neptune, sea, seven seas

Related Words blue water, high seas, main, waters; basin; Davy Jones's locker, depths