1. specialist an expert devoted to one occupation or branch of learning
  2. special agent someone whose authority is limited to the special undertaking they have been instructed to perform
  3. specialized developed or designed for a particular activity or function
  4. speciality a distinguishing trait
  5. specialised developed or designed for a special activity or function
  6. specialness the quality of being particular and pertaining to a specific case or instance
  7. special act a legislative act that applies only to a particular person or particular district
  8. specialty an asset of special worth or utility
  9. social unit an organization regarded as part of a larger social group
  10. special effect an effect used to produce scenes that cannot be achieved by normal techniques (especially on film)
  11. display window a window of a store facing onto the street
  12. specialistic of or related to or characteristic of specialists
  13. sash window a window with sashes that slide vertically to let in air
  14. special adapted to or reserved for a particular purpose
  15. speciation the evolution of a biological species
  16. Spice Islands a group of island in eastern Indonesia between Celebes and New Guinea; settled by the Portuguese but taken by the Dutch who made them the center for a spice monopoly, at which time they were known as Spice Islands
  17. specialize become more focused on an area of activity or field of study
  18. specialise devote oneself to a special area of work
  19. special interest an individual or group who are concerned with some particular part of the economy and who try to influence legislators or bureaucrats to act in their favor
  20. specialism the concentration of your efforts on a particular field of study or occupation