mas·se·ter /məˈsitɚ/
  咀嚼肌; 咀嚼肌; 咬肌
  mas·se·ter /məˈsɪtɚ, mæ-/ 名詞
  咬肌
  Mas·se·ter n.  Anat. The large muscle which raises the under jaw, and assists in mastication.
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  masseter
       n : a large muscle that raises the lower jaw and is used in
           chewing