1. download transfer a file or program to a smaller computer
  2. to and fro moving from one place to another and back again
  3. Daniel Defoe English writer remembered particularly for his novel about Robinson Crusoe (1660-1731)
  4. lead-free (of gasoline) not containing tetraethyl lead
  5. enfilade fire gunfire directed along the length rather than the breadth of a formation
  6. toll-free having no toll levied for its use
  7. downy mildew any of various fungi of the family Peronosporaceae parasitic on e.g. grapes and potatoes and melons
  8. tailed frog western North American frog with a taillike copulatory organ
  9. wildfire a destructing burning that is raging and rapidly spreading
  10. duty-free exempt from duty
  11. cloud over become overcast
  12. Donald Duck a fictional duck created in animated film strips by Walt Disney
  13. downriver away from the source or with the current
  14. hold over hold over goods to be sold for the next season
  15. rent-free complimentary; without payment of rent
  16. uncalled-for not required or requested
  17. potential difference the difference in electrical charge between two points in a circuit expressed in volts
  18. stand for express indirectly by an image, form, or model; be a symbol
  19. dangling modifier a word or phrase unclearly or illogically describing a noun
  20. unlooked-for not anticipated