1. winter fern large branching biennial herb native to Eurasia and Africa and adventive in North America having large fernlike leaves and white flowers; usually found in damp habitats; all parts extremely poisonous
  2. interferon an antiviral protein produced by cells that have been invaded by a virus; inhibits replication of the virus
  3. interfere get involved, so as to alter or hinder an action
  4. introvert a person who tends to shrink from social contacts
  5. wintergreen any of several evergreen perennials of the genus Pyrola
  6. winter wren small wren of coniferous forests of northern hemisphere
  7. water fern ferns that grow in water
  8. winter urn a common name for a variety of Sarcosomataceae
  9. interfering intrusive in a meddling or offensive manner
  10. interference the act of hindering or obstructing or impeding
  11. intervene be placed or located between other things
  12. interwoven linked, laced, or locked closely together
  13. interpret make sense of; assign a meaning to
  14. oleander fern tropical fern having leathery fronds resembling oleander
  15. interbrain the posterior division of the forebrain
  16. interviewer a person who conducts an interview
  17. introversion the folding in of an outer layer so as to form a pocket in the surface
  18. winter-flowering of plants that bloom during the winter
  19. winter melon any of a variety of muskmelon vines having fruit with a smooth white rind and white or greenish flesh that does not have a musky smell
  20. intervenor (law) a party who interposes in a pending proceeding