The Collaborative International Dictionary of English v.0.48:

Ague \A"gue\, v. t. [imp. & p. p. Agued.]
   To strike with an ague, or with a cold fit. --Heywood.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

ague \a"gue\ ([=a]"g[-u]), n. [OE. agu, ague, OF. agu, F. aigu,
   sharp, OF. fem. ague, LL. (febris) acuta, a sharp, acute
   fever, fr. L. acutus sharp. See Acute.]
   1. An acute fever. [Obs.] "Brenning agues." --P. Plowman.
      [1913 Webster]

   2. (Med.) A fever characterized by paroxysms of high fever
      and shaking chills.
      [1913 Webster + AS]

   3. The cold fit or rigor of malaria or any other intermittent
      fever; as, fever and ague.
      [1913 Webster + AS]

   4. A chill, or state of shaking, as with cold. --Dryden. AS
      [1913 Webster]

   Ague cake, an enlargement of the spleen produced by ague.


   Ague drop, a solution of the arsenite of potassa used for
      ague.

   Ague fit, a fit of the ague. --Shak.

   Ague spell, a spell or charm against ague. --Gay.

   Ague tree, the sassafras, -- sometimes so called from the
      use of its root formerly, in cases of ague. [Obs.]
      [1913 Webster]

WordNet (r) 3.0 (2006):

ague
    n 1: a fit of shivering or shaking
    2: successive stages of chills and fever that is a symptom of
       malaria [syn: ague, chills and fever]
    3: a mark (') placed above a vowel to indicate pronunciation
       [syn: acute accent, acute, ague]

Moby Thesaurus II by Grady Ward, 1.0:

221 Moby Thesaurus words for "ague":
   African lethargy, Asiatic cholera, Chagres fever, German measles,
   Haverhill fever, abscess, acute articular rheumatism,
   alkali disease, amebiasis, amebic dysentery, anemia, ankylosis,
   anoxia, anthrax, apnea, asphyxiation, asthma, ataxia, atrophy,
   bacillary dysentery, backache, bastard measles, black death,
   black fever, blackwater fever, bleeding, blennorhea,
   breakbone fever, brucellosis, bubonic plague, bumpiness,
   cachectic fever, cachexia, cachexy, cerebral rheumatism,
   chattering, chicken pox, chill, chills, cholera, chorea,
   cold shivers, colic, constipation, convulsion, coughing, cowpox,
   cyanosis, dandy fever, deer fly fever, dengue, dengue fever,
   diarrhea, diphtheria, dizziness, dropsy, dumdum fever, dysentery,
   dyspepsia, dyspnea, edema, elephantiasis, emaciation,
   encephalitis lethargica, enteric fever, erysipelas, fainting,
   famine fever, fatigue, fever, fibrillation, fits and starts,
   five-day fever, flu, flux, frambesia, glandular fever, grippe,
   growth, hansenosis, hemorrhage, hepatitis, herpes, herpes simplex,
   herpes zoster, high blood pressure, histoplasmosis, hookworm,
   hydrophobia, hydrops, hypertension, hypotension, icterus,
   indigestion, infantile paralysis, infectious mononucleosis,
   inflammation, inflammatory rheumatism, influenza, insomnia,
   itching, jactation, jactitation, jail fever, jaundice, jerkiness,
   joltiness, jungle rot, kala azar, kissing disease,
   labored breathing, lepra, leprosy, leptospirosis, loa loa,
   loaiasis, lockjaw, low blood pressure, lumbago, madness, malaria,
   malarial fever, marasmus, marsh fever, measles, meningitis,
   milzbrand, mumps, nasal discharge, nausea, necrosis, ornithosis,
   osteomyelitis, pain, palsy, paralysis, paratyphoid fever,
   parotitis, parrot fever, pertussis, pneumonia, polio,
   poliomyelitis, polyarthritis rheumatism, ponos, pruritus,
   psittacosis, quaking, quavering, quivering, rabbit fever, rabies,
   rash, rat-bite fever, relapsing fever, rheum, rheumatic fever,
   rickettsialpox, ringworm, rubella, rubeola, scarlatina,
   scarlet fever, schistosomiasis, sclerosis, seizure,
   septic sore throat, shakes, shaking, shingles, shivering, shivers,
   shock, shuddering, skin eruption, sleeping sickness,
   sleepy sickness, smallpox, snail fever, sneezing, sore, spasm,
   spasms, splenic fever, spotted fever, strep throat, succussion,
   swamp fever, tabes, tachycardia, tetanus, thrush, tinea, trembling,
   tremulousness, trench fever, trench mouth, tuberculosis, tularemia,
   tumor, typhoid, typhoid fever, typhus, typhus fever,
   undulant fever, upset stomach, vaccinia, varicella, variola,
   venereal disease, vertigo, vibration, viral dysentery, vomiting,
   wasting, whooping cough, yaws, yellow fever, yellow jack, zona,
   zoster



Easton's 1897 Bible Dictionary:

Ague
   the translation in Lev. 26:16 (R.V., "fever") of the Hebrew word
   kaddah'ath, meaning "kindling", i.e., an inflammatory or burning
   fever. In Deut. 28:22 the word is rendered "fever."