sea

Multiple Entries:
  sea    SEA  

Concise Oxford English Dictionary © 2008 Oxford University Press:
sea/siː/

▶noun

• 1 the expanse of salt water that covers most of the earth's surface and surrounds its land masses.

  ■ a roughly definable area of this: the Black Sea.

  ■ (also seas) waves as opposed to calm sea.

• 2 a vast expanse or quantity: a sea of faces.

– phrases
at sea

• 1 sailing on the sea.

• 2 (also all at sea) confused; uncertain.

put (out) to sea leave land on a voyage.
one's sea legs one's ability to keep one's balance and not feel seasick on board a moving ship.

– derivatives
seaward adjective & adverb,
seawards adverb.

– origin OE sǣ, of Gmc origin.

Concise Oxford English Dictionary © 2008 Oxford University Press:
SEA

▶abbreviation Single European Act.