Definition of dental dam noun from the Oxford Advanced Learner's Dictionary

     

    dental dam

     noun
    noun
    BrE
     
    ; NAmE
     
    (also dam)
     
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  1. 1a small rubber sheet used by dentists to keep a tooth separate from the other teeth
  2. 2a small rubber sheet used to protect the mouth during sex
See the Oxford Advanced American Dictionary entry: dental dam