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Lockjaw can refer to any of the following:

Medical conditions and diseases[edit]

  • Trismus, a pathological condition in which the mouth is held shut by sustained spasm of the masseter (jaw) muscle, often observed in cases of tetanus.
  • Tetanus, an infectious disease of the central nervous system.
  • Temporomandibular joint dysfunction or TMD, often erroneously called TMJ

Arts and literature[edit]

In sociology and linguistics[edit]