1. wintergreen family evergreen herbs of temperate regions: genera Pyrola, Chimaphila, Moneses, Orthilia
  2. wintergreen oil oil or flavoring obtained from the creeping wintergreen or teaberry plant
  3. winter's bark family small family of chiefly tropical shrubs and trees of genera Drimys and Pseudowintera; sometimes included in Magnoliaceae
  4. wintergreen any of several evergreen perennials of the genus Pyrola
  5. Underground Railway secret aid to help people escape slavery in the U.S.
  6. interchangeably in an interchangeable manner
  7. intracranial within the skull
  8. interregnum the time between two reigns or governments
  9. interchangeable permitting mutual substitution without loss of function
  10. arrow-grass family a family of monocotyledonous bog herbs of order Naiadales
  11. interrogatively in a questioning format
  12. linden family chiefly trees and shrubs of tropical and temperate regions of especially southeastern Asia and Brazil; genera Tilia, Corchorus, Entelea, Grewia, Sparmannia
  13. interactional capable of acting on or influencing each other
  14. araucaria family tall evergreen cone-bearing trees of South America and Australia with broad leathery leaves; in some classifications included in the Pinaceae
  15. interrogative relating to sentences that ask a question
  16. buttercup family a family of Ranunculaceae
  17. winter currant a flowering shrub
  18. interrogation an instance of questioning
  19. sterculia family a large family of plants of order Malvales
  20. foster family the family of a fosterling