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3 definitions found
 for Brain fever
From The Collaborative International Dictionary of English v.0.48 :

  Brain \Brain\ (br[=a]n), n. [OE. brain, brein, AS. bragen,
     br[ae]gen; akin to LG. br[aum]gen, bregen, D. brein, and
     perh. to Gr. bre`gma, brechmo`s, the upper part of head, if
     [beta] = [phi]. [root]95.]
     [1913 Webster]
     1. (Anat.) The whitish mass of soft matter (the center of the
        nervous system, and the seat of consciousness and
        volition) which is inclosed in the cartilaginous or bony
        cranium of vertebrate animals. It is simply the anterior
        termination of the spinal cord, and is developed from
        three embryonic vesicles, whose cavities are connected
        with the central canal of the cord; the cavities of the
        vesicles become the central cavities, or ventricles, and
        the walls thicken unequally and become the three segments,
        the fore-, mid-, and hind-brain.
        [1913 Webster]
     Note: In the brain of man the cerebral lobes, or largest part
           of the forebrain, are enormously developed so as to
           overhang the cerebellum, the great lobe of the
           hindbrain, and completely cover the lobes of the
           midbrain. The surface of the cerebrum is divided into
           irregular ridges, or convolutions, separated by grooves
           (the so-called fissures and sulci), and the two
           hemispheres are connected at the bottom of the
           longitudinal fissure by a great transverse band of
           nervous matter, the corpus callosum, while the two
           halves of the cerebellum are connected on the under
           side of the brain by the bridge, or pons Varolii.
           [1913 Webster]
     2. (Zool.) The anterior or cephalic ganglion in insects and
        other invertebrates.
        [1913 Webster]
     3. The organ or seat of intellect; hence, the understanding;
        as, use your brains. " My brain is too dull." --Sir W.
        [1913 Webster]
     Note: In this sense, often used in the plural.
           [1913 Webster]
     4. The affections; fancy; imagination. [R.] --Shak.
        [1913 Webster]
     5. a very intelligent person. [informal]
     6. the controlling electronic mechanism for a robot, guided
        missile, computer, or other device exhibiting some degree
        of self-regulation. [informal]
     To have on the brain, to have constantly in one's thoughts,
        as a sort of monomania. [Low]
     no-brainer a decision requiring little or no thought; an
        obvious choice. [slang]
        [1913 Webster]
     Brain box or Brain case, the bony or cartilaginous case
        inclosing the brain.
     Brain coral, Brain stone coral (Zool.), a massive
        reef-building coral having the surface covered by ridges
        separated by furrows so as to resemble somewhat the
        surface of the brain, esp. such corals of the genera
        M[ae]andrina and Diploria.
     Brain fag (Med.), brain weariness. See Cerebropathy.
     Brain fever (Med.), fever in which the brain is specially
        affected; any acute cerebral affection attended by fever.
     Brain sand, calcareous matter found in the pineal gland.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Fever \Fe"ver\ (f[=e]"v[~e]r), 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.
        [1913 Webster]
     Note: Remitting fevers subside or abate at intervals;
           intermitting fevers intermit or entirely cease at
           intervals; continued or continual fevers neither remit
           nor intermit.
           [1913 Webster]
     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.
        [1913 Webster]
              An envious fever
              Of pale and bloodless emulation.      --Shak.
        [1913 Webster]
              After life's fitful fever he sleeps well. --Shak.
        [1913 Webster]
     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
     Fever powder. Same as Jame's powder.
     Fever root (Bot.), an American herb of the genus
        Triosteum+({Triosteum+perfoliatum">Triosteum ({Triosteum perfoliatum); -- called also
        feverwort and horse gentian.
     Fever sore, a carious ulcer or necrosis. --Miner.
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

  brain fever
      n 1: meningitis caused by bacteria and often fatal [syn:
           cerebrospinal meningitis, epidemic meningitis, brain
           fever, cerebrospinal fever]

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