#grapefruit  large yellow fruit with somewhat acid juicy pulp; usual serving consists of a half
  supertype:  citrus_fruit__citrus  any of numerous fruits of the genus Citrus having thick rind and juicy pulp; grown in warm regions
  part of:  Citrus_paradisi
  part:  grapefruit_peel  strips of grapefruit peel cooked in sugar syrup and coated with sugar

No statement uses or specializes grapefruit; click here to add one.