ep‧i‧dur‧al /ˌepɪˈdjʊərəl◂ $ -ˈdʊr-/ 
 noun [countable][
Date: 1800-1900; 
Origin: epi- (epicenter) + dura, from dura mater 'outer covering of the main nerve in the back' (14-21 centuries), from Latin, 'hard mother']
 a drug that is put into your back using a needle, done to prevent you feeling pain, especially when having a baby 
 [TahlilGaran] Dictionary of Contemporary English ▲