American English

Definition of allergy noun from the Oxford Advanced American Dictionary

 

allergy

 noun
noun
NAmE//ˈælərdʒi//
 
(pl. allergies) allergy (to something)
 
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a medical condition that causes you to react badly or feel sick when you eat or touch a particular substance I have an allergy to peanuts. Hay fever is caused by an allergy to pollen.
See the Oxford Advanced Learner's Dictionary entry: allergy