1. safety valve a valve in a container in which pressure can build up
  2. slide valve valve that opens and closes a passageway by sliding over a port
  3. safety isle a curbed area in a roadway from which traffic is excluded
  4. safety glass glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
  5. safety belt belt attaching you to some object as a restraint in order to prevent you from getting hurt
  6. safety fuse an electrical device that can interrupt the flow of electrical current when it is overloaded
  7. safety bolt a bolt that cannot be moved from outside the door or gate
  8. safety rail a railing placed alongside a stairway or road for safety
  9. safety feature feature of an artifact that is added to insure a user's safety
  10. staff of life food made from dough of flour or meal and usually raised with yeast or baking powder and then baked
  11. soft flag reed maces of America, Europe, North Africa, Asia
  12. sluice valve regulator consisting of a valve or gate that controls the rate of water flow through a sluice
  13. poppet valve a mushroom-shaped valve that rises perpendicularly from its seat; commonly used in internal-combustion engines
  14. heart valve a valve to control one-way flow of blood
  15. safety lock a bolt that cannot be moved from outside the door or gate
  16. rift valley a valley with steep sides
  17. festival an organized series of acts and performances
  18. devolve pass on or delegate to another
  19. safety-related providing or ensuring safety
  20. safety factor the ratio of the breaking stress of a structure to the estimated maximum stress in ordinary use

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