piriformis Definition in Cambridge British English Dictionary
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Definition of "piriformis" - British English Dictionary

piriformisnoun

uk   /ˌpɪr.ɪˈfɔː.mɪs/  us   /ˌpɪr.əˈfɔr.mɪs/ specialized
a muscle that moves the hip joint around
(Definition of piriformis from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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