Source : Webster's Revised Unabridged Dictionary (1913)

Fever \Fe"ver\, n. [OE. fever, fefer, AS. fefer, fefor, L.
   febris: cf. F. fi[`e]vre. Cf. {Febrile}.]
   1. (Med.) A diseased state of the system, marked by increased
      heat, acceleration of the pulse, and a general derangement
      of the functions, including usually, thirst and loss of
      appetite. Many diseases, of which fever is the most
      prominent symptom, are denominated fevers; as, typhoid
      fever; yellow fever.

   Note: Remitting fevers subside or abate at intervals;
         intermitting fevers intermit or entirely cease at
         intervals; continued or continual fevers neither remit
         nor intermit.

   2. Excessive excitement of the passions in consequence of
      strong emotion; a condition of great excitement; as, this
      quarrel has set my blood in a fever.

            An envious fever Of pale and bloodless emulation.
                                                  --Shak.

            After life's fitful fever he sleeps well. --Shak.

   {Brain fever}, {Continued fever}, etc. See under {Brain},
      {Continued}, etc.

   {Fever and ague}, a form of fever recurring in paroxysms
      which are preceded by chills. It is of malarial origin.

   {Fever blister} (Med.), a blister or vesicle often found
      about the mouth in febrile states; a variety of herpes.

   {Fever bush} (Bot.), the wild allspice or spice bush. See
      {Spicewood}.

   {Fever powder}. Same as {Jame's powder}.

   {Fever root} (Bot.), an American herb of the genus
      {Triosteum} ({T. perfoliatum}); -- called also {feverwort}
      amd {horse gentian}.

   {Fever sore}, a carious ulcer or necrosis. --Miner.

Fever \Fe"ver\, v. t. [imp. & p. p. {Fevered}; p. pr. & vb. n.
   {Fevering}.]
   To put into a fever; to affect with fever; as, a fevered lip.
   [R.]

         The white hand of a lady fever thee.     --Shak.

Source : WordNet®

fever
     n 1: a rise in the temperature of the body; frequently a symptom
          of infection [syn: {febrility}, {febricity}, {pyrexia},
          {feverishness}]
     2: intense nervous anticipation; "in a fever of resentment"