smeg·ma /ˈsmɛgmə/
  包皮垢
  smeg·ma /ˈsmɛgmə/ 名詞
  包皮垢,陰垢
  Smeg·ma n.  Physiol. The matter secreted by any of the sebaceous glands. Specifically: (a) The soapy substance covering the skin of newborn infants. (b) The cheesy, sebaceous matter which collects between the glans penis and the foreskin.
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  smegma
       n : a white secretion of the sebaceous glands of the foreskin