PETHIDINE Meaning of PETHIDINE in English peth ‧ i ‧ dine /ˈpeθədiːn, ˈpeθɪdiːn/ BrE AmE noun [uncountable] a drug used to reduce severe pain, given especially to women who are giving birth Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012