Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun diphenhydramine

1 sense of diphenhydramine

Sense 1
diphenhydramine, Benadryl -- (antihistamine (trade name Benadryl) used to treat allergic reactions involving the nasal passages (hay fever) and also to treat motion sickness)
       => antihistamine -- (a medicine used to treat allergies and hypersensitive reactions and colds; works by counteracting the effects of histamine on a receptor site)