Definition of sea:
- The expanse of salt water that covers the more depressed portion of the earth's surface; a definite part of this expanse; the ocean; a wave; a surge; the swell of the ocean in a tempest; a large quantity of a fluid substance; a rough or agitated place or element; a large basin or laver in the Temple. At sea, on the main ocean; wrong. Half- seas over, half tipsy. On the high seas, in the open sea., To go to sea, to become a sailor.
- A vast collection of water, smaller than that of an ocean; the ocean; a wave or large quantity of sea- water, as to ship a sea; the character of the surging and swelling of the waves, as a heavy sea; any large quantity of water or other liquid; in Scrip., applied to a large basin or cistern.
- Of or relating to the sea, or connected with it.