Source : Webster's Revised Unabridged Dictionary (1913)

Close \Close\, v. t. [imp. & p. p. {Closed}; p. pr. & vb. n.
   {Closing}.] [From OF. & F. clos, p. p. of clore to close, fr.
   L. claudere; akin to G. schliessen to shut, and to E. clot,
   cloister, clavicle, conclude, sluice. Cf. {Clause}, n.]
   1. To stop, or fill up, as an opening; to shut; as, to close
      the eyes; to close a door.

   2. To bring together the parts of; to consolidate; as, to
      close the ranks of an army; -- often used with up.

   3. To bring to an end or period; to conclude; to complete; to
      finish; to end; to consummate; as, to close a bargain; to
      close a course of instruction.

            One frugal supper did our studies close. --Dryden.

   4. To come or gather around; to inclose; to encompass; to
      confine.

            The depth closed me round about.      --Jonah ii. 5.

            But now thou dost thyself immure and close In some
            one corner of a feeble heart.         --Herbert.

   {A closed sea}, a sea within the jurisdiction of some
      particular nation, which controls its navigation.