Main Entry: di·phen·hy·dra·mine

Pronunciation: \ˌdī-ˌfen-ˈhī-drə-ˌmēn\

Function: noun

: an antihistamine used especially in the form of its hydrochloride C₁₇H₂₁NO·HCl to treat allergy symptoms and motion sickness and to induce sleep—see benadryl