1. flotation device rescue equipment consisting of a buoyant belt or jacket to keep a person from drowning
  2. memory device a device that preserves information for retrieval
  3. mechanical device mechanism consisting of a device that works on mechanical principles
  4. homing device the mechanism in a guided missile that guides it toward its objective
  5. motionless completely still
  6. monitoring device display produced by a device that takes signals and displays them on a television screen or a computer monitor
  7. measuring device instrument that shows the extent or amount or quantity or degree of something
  8. advice a proposal for an appropriate course of action
  9. murine typhus acute infection caused by rickettsia and transmitted by the bite of an infected flea; characterized by fever and chills and muscle aches and a rash
  10. computing device a machine for performing calculations automatically
  11. mountain devil erect bushy shrub of eastern Australia having terminal clusters of red flowers yielding much nectar
  12. John Davis English navigator who explored the Arctic while searching for the Northwest Passage (1550-1605)
  13. lifting device a device for lifting heavy loads
  14. vision defect impairment of the sense of sight
  15. holding device a device for holding something
  16. motion sickness the state of being dizzy or nauseated because of the motions that occur while traveling in or on a moving vehicle
  17. national service compulsory service in the military during peacetime
  18. guidance device a system of equipment for automatically guiding the path of a vehicle (especially a missile)
  19. Patent Office the government bureau in the Department of Commerce that keeps a record of patents and trademarks and grants new ones
  20. motionlessness a state of no motion or movement