slipped disc
From Longman Dictionary of Contemporary EnglishRelated topics: Illness & disabilityslipped discˌslipped ˈdisc (also slipped disk American English) noun [countable usually singular] MIa painful injury caused when one of the connecting parts between the bones in your back moves out of placeExamples from the Corpusslipped disc• Could it be a slipped disc?• He was only twenty-six and had just recovered from a slipped disc.• He retired early from electrical work because of a slipped disc.