Noun: antihistamine ,an-ti'his-tu,meen
- A medicine used to treat allergies and hypersensitive reactions and colds; works by counteracting the effects of histamine on a receptor site
"She took an antihistamine to relieve her hay fever symptoms"
Derived forms: antihistamines
Type of: med [informal], medicament, medication, medicinal drug, medicine
Encyclopedia: Antihistamine