Source : Webster's Revised Unabridged Dictionary (1913)

Harbor \Har"bor\, v. t. [Written also {harbour}.] [imp. & p. p.
   {Harbored}; p. pr. & vb. n. {Harboring}.] [OE. herberen,
   herberwen, herbergen; cf. Icel. herbergja. See {Harbor}, n.]
   To afford lodging to; to enter as guest; to receive; to give
   a refuge to; indulge or cherish (a thought or feeling, esp.
   an ill thought).

         Any place that harbors men.              --Shak.

         The bare suspicion made it treason to harbor the person
         suspected.                               --Bp. Burnet.

         Let not your gentle breast harbor one thought of
         outrage.                                 --Rowe.

Harbor \Har"bor\, n. [Written also {harbour}.] [OE herbor,
   herberwe, herberge, Icel. herbergi (cf. OHG. heriberga),
   orig., a shelter for soldiers; herr army + bjarga to save,
   help, defend; akin to AS. here army, G. heer, OHG. heri,
   Goth. harjis, and AS. beorgan to save, shelter, defend, G.
   bergen. See {Harry}, {2d Bury}, and cf. {Harbinger}.]
   1. A station for rest and entertainment; a place of security
      and comfort; a refuge; a shelter.

            [A grove] fair harbour that them seems. --Spenser.

            For harbor at a thousand doors they knocked.
                                                  --Dryden.

   2. Specif.: A lodging place; an inn. [Obs.] --Chaucer.

   3. (Astrol.) The mansion of a heavenly body. [Obs.]

   4. A portion of a sea, a lake, or other large body of water,
      either landlocked or artificially protected so as to be a
      place of safety for vessels in stormy weather; a port or
      haven.

Harbor \Har"bor\, v. i.
   To lodge, or abide for a time; to take shelter, as in a
   harbor.

         For this night let's harbor here in York. --Shak.

Source : WordNet®

harbor
     n 1: a sheltered port where ships can take on or discharge cargo
          [syn: {seaport}, {haven}, {harbour}]
     2: a place of refuge and comfort and security [syn: {harbour}]

harbor
     v 1: maintain (a theory, thoughts, or feelings); "bear a grudge";
          "entertain interesting notions"; "harbor a resentment"
          [syn: {harbour}, {hold}, {entertain}, {nurse}]
     2: secretly shelter (as of fugitives or criminals) [syn: {harbour}]
     3: keep in one's possession; of animals [syn: {harbour}]
     4: hold back a thought or feeling about; "She is harboring a
        grudge against him" [syn: {harbour}, {shield}]