[1] : The Collaborative International Dictionary of English v.0.48

hay \hay\, n. oe. hei, as. h=eg; akin to d. hooi, ohg. hewi,
   houwi, g. heu, dan.  sw. h"o, icel. hey, ha, goth. hawi
   grass, fr. the root of e. hew. see hew to cut.
   grass cut and cured for fodder.
   1913 webster

         make hay while the sun shines.           --camden.
   1913 webster

         hay may be dried too much as well as too little. --c.
                                                  l. flint.
   1913 webster

   hay cap, a canvas covering for a haycock.

   hay fever med., nasal catarrh accompanied with fever, and
      sometimes with paroxysms of dyspnoea, to which some
      persons are subject in the spring and summer seasons. it
      has been attributed to the effluvium from hay, and to the
      pollen of certain plants. it is also called hay asthma,
      hay cold, rose cold, and rose fever.

   hay knife, a sharp instrument used in cutting hay out of a
      stack or mow.

   hay press, a press for baling loose hay.

   hay tea, the juice of hay extracted by boiling, used as
      food for cattle, etc.

   hay tedder, a machine for spreading and turning new-mown
      hay. see tedder.
      1913 webster
see also:
hew hay cap hay fever hay asthma hay cold rose cold 
rose fever hay knife hay press hay tea hay tedder 
tedder 

[2] : WordNet (r) 2.0

hay fever
     n : a seasonal rhinitis resulting from an allergic reaction to
         pollen syn: pollinosis
see also:
pollinosis 

[3] : Moby Thesaurus II by Grady Ward, 1.0

73 moby thesaurus words for "hay fever":
   asiatic flu, hong kong flu, acute bronchitis, adenoiditis,
   allergen, allergic disorder, allergy, aluminosis, amygdalitis,
   anthracosilicosis, anthracosis, asbestosis, asthma,
   atypical pneumonia, bituminosis, black lung, bronchial pneumonia,
   bronchiectasis, bronchiolitis, bronchitis, bronchopneumonia,
   catarrh, chalicosis, chronic bronchitis, cold, collapsed lung,
   common cold, coniosis, conjunctivitis, coryza, cosmetic dermatitis,
   croup, croupous pneumonia, double pneumonia, dry pleurisy, eczema,
   emphysema, empyema, epidemic pleurodynia, fibrinous pneumonia, flu,
   grippe, hives, influenza, la grippe, laryngitis, lipoid pneumonia,
   lobar pneumonia, lung cancer, lung fever, pharyngitis, pleurisy,
   pleuritis, pneumococcal pneumonia, pneumoconiosis, pneumonia,
   pneumonic fever, pneumothorax, pollinosis, quinsy, rheum,
   rose cold, siderosis, silicosis, sore throat, swine flu,
   the sniffles, the snuffles, tonsilitis, urticaria, virus pneumonia,
   wet pleurisy, whooping cough

Hay Fever >> H Words
Hay Fever, definition of term: Hay Fever
hay+fever_pag1.html

Hay >> H Words
Hay, definition of term: Hay
hay_pag1.html

Fever >> F Words
Fever, definition of term: Fever
fever_pag1.html

Hay Press >> H Words
Hay Press, definition of term: Hay Press
hay+press_pag1.html

Fever Tree >> F Words
Fever Tree, definition of term: Fever Tree
fever+tree_pag1.html

Fever Blister >> F Words
Fever Blister, definition of term: Fever Blister
fever+blister_pag1.html

Dumdum Fever >> D Words
Dumdum Fever, definition of term: Dumdum Fever
dumdum+fever_pag1.html

Dengue Fever >> D Words
Dengue Fever, definition of term: Dengue Fever
dengue+fever_pag1.html

Gold Fever >> G Words
Gold Fever, definition of term: Gold Fever
gold+fever_pag1.html

Gastric Fever >> G Words
Gastric Fever, definition of term: Gastric Fever
gastric+fever_pag1.html

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