any of various plants with slippery, pitcherlike leaves that contain a pool of enzymes that digest trapped insects; esp., any of a family (Sarraceniaceae, order Nepenthales) of dicotyledonous, New World plants that grow in swamps and bogs
See pitcher plant in American Heritage Dictionary 4
noun
Any of various insectivorous plants of the genera Sarracenia, Nepenthes, or Darlingtonia, having pitcherlike leaves that attract and trap insects.