1. tailed frog western North American frog with a taillike copulatory organ
  2. alfresco in the open air
  3. Old French the earliest form of the French language
  4. tour de force a masterly or brilliant feat
  5. diversity noticeable variety
  6. Lee De Forest United States electrical engineer who in 1907 patented the first triode vacuum tube, which made it possible to detect and amplify radio waves (1873-1961)
  7. toad frog any of various tailless stout-bodied amphibians with long hind limbs for leaping; semiaquatic and terrestrial species
  8. goliath frog largest living frog
  9. salad fork a fork intended for eating salads
  10. adversity a state of misfortune or affliction
  11. Old Frisian the Frisian language until the 16th century
  12. adverse in an opposing direction
  13. dentifrice a substance for cleaning the teeth
  14. twilight vision the ability to see in reduced illumination (as in moonlight)
  15. multifarious having many aspects
  16. plateletpheresis platelets are separated from whole blood and the rest is returned to the donor
  17. fresco a mural done with watercolors on wet plaster
  18. adversary someone who offers opposition
  19. lady friend a girl or young woman with whom a man is romantically involved
  20. twenty-first coming next after the twentieth in position