1. rock oil a dark oil consisting mainly of hydrocarbons
  2. recoil spring back; spring away from an impact
  3. rock wool a light fibrous material used as an insulator
  4. Rockwell United States illustrator whose works present a sentimental idealized view of everyday life (1894-1978)
  5. rockfoil any of various plants of the genus Saxifraga
  6. ruckle make wrinkles or creases on a smooth surface
  7. rockabilly a fusion of black music and country music that was popular in the 1950s; sometimes described as blues with a country beat
  8. broccoli plant with dense clusters of tight green flower buds
  9. Wroclaw a city in southwestern Poland on the Oder
  10. rose oil a volatile fragrant oil obtained from fresh roses by steam distillation
  11. parochial relating to or supported by or located in a parish
  12. rocklike hard as granite
  13. rock elm tall widely distributed elm of eastern North America
  14. Rocroi a battle in the Thirty Years' War
  15. shark oil a fatty yellow to brown oil obtained from the livers of sharks; used for dressing leather and as a source of vitamin A
  16. birch oil a liquid ester with a strong odor of wintergreen
  17. protocol forms of ceremony and etiquette observed by officials
  18. rococo having excessive asymmetrical ornamentation
  19. rock material consisting of the aggregate of minerals
  20. rocket a jet engine containing its own propellant and driven by reaction propulsion