cin·gu·lum /ˈsɪŋgjələm/
  帶,帶狀之物
  cin·gu·lum /ˈsɪŋgjələm/ 名詞
  扣帶,基,舌面隆凸
  Cin·gu·lum n.  Zool. (a) A distinct girdle or band of color; a raised spiral line as seen on certain univalve shells. (b) The clitellus of earthworms. (c) The base of the crown of a tooth.
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  cingulum
       n : (anatomy) an encircling girdle-like structure (as the ridge
           around the base of a tooth)
       [also: cingula (pl)]