1. slave trader a person engaged in slave trade
  2. solidarity a union of interests or purposes among members of a group
  3. stock trader someone who buys and sells stock shares
  4. sightreader a performer who reads without preparation or prior acquaintance (as in music)
  5. solderer a worker who joins or mends with solder
  6. free trader an advocate of unrestricted international trade
  7. blue darter bluish-grey North American hawk having a darting flight
  8. call to order open formally
  9. slave trade traffic in slaves
  10. maltreater someone who abuses
  11. self-torture self-imposed distress
  12. snail darter a small snail-eating perch of the Tennessee River
  13. horse trader a hard bargainer
  14. alliterator a speaker or writer who makes use of alliteration
  15. alder tree north temperate shrubs or trees having toothed leaves and conelike fruit; bark is used in tanning and dyeing and the wood is rot-resistant
  16. illustrator an artist who makes illustrations
  17. short order an order for food that can be prepared quickly
  18. solitary vireo of eastern North America having a bluish-grey head and mostly green body
  19. word order the order of words in a text
  20. self-loader a firearm that reloads itself