Definition of epidural noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˌepɪˈdjʊərəl//
; NAmE usually NAmE//ˌepɪˈdʊrəl//
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an anaesthetic that is put into the lower part of the back so that no pain is felt below the waist Some mothers choose to have an epidural when giving birth. Word Originlate 19th cent.: from epi- ‘upon’ + dura ‘the outermost membrane around the brain and spinal cord’ + -al.
See the Oxford Advanced American Dictionary entry: epidural