1. drugstore a retail shop where medicine and other articles are sold
  2. powder store a storehouse where weapons and ammunition are stored
  3. subdirectory a directory that is listed in another directory
  4. head register the higher ranges of the voice in speaking or singing
  5. obturator a prosthesis used to close an opening
  6. chest register the lower ranges of the voice in speaking or singing
  7. bookstore a shop where books are sold
  8. electric storm a storm resulting from strong rising air currents
  9. subtracter a person who subtracts numbers
  10. Arthur Koestler British writer (born in Hungary) who wrote a novel exposing the Stalinist purges during the 1930s (1905-1983)
  11. shift register (computer science) register in which all bits can be shifted one or more positions to the left or to the right
  12. orchestra a musical organization consisting of instrumentalists
  13. clothing store a store where men's clothes are sold
  14. intercostal located or occurring between the ribs
  15. trickster someone who plays practical jokes on others
  16. package store a store that sells alcoholic beverages for consumption elsewhere
  17. forecaster someone who makes predictions of the future
  18. hypercoaster a roller coaster that goes up 200 feet or higher and can catapult riders from 0 to 70 mph in 4 seconds by motors originally designed to launch rockets
  19. index register a register used to determine the address of an operand
  20. ex-directory (of telephone numbers) not listed in the telephone directory