1. slide valve valve that opens and closes a passageway by sliding over a port
  2. sluice valve regulator consisting of a valve or gate that controls the rate of water flow through a sluice
  3. safety valve a valve in a container in which pressure can build up
  4. slide rule analog computer consisting of a handheld instrument used for rapid calculations; have been replaced by pocket calculators
  5. self-love an exceptional interest in and admiration for yourself
  6. relief valve a valve in a container in which pressure can build up
  7. devolve pass on or delegate to another
  8. clack valve a simple valve with a hinge on one side
  9. slothful disinclined to work or exertion
  10. shelf life the length of time a packaged food or drug will last without deteriorating
  11. light-of-love a woman inconstant in love
  12. poppet valve a mushroom-shaped valve that rises perpendicularly from its seat; commonly used in internal-combustion engines
  13. quality of life your personal satisfaction (or dissatisfaction) with the cultural or intellectual conditions under which you live (as distinct from material comfort)
  14. heart valve a valve to control one-way flow of blood
  15. ball valve any valve that checks flow by the seating of a ball
  16. escape valve a valve in a container in which pressure can build up
  17. bicuspid valve valve with two cusps
  18. solid figure a three-dimensional shape
  19. absolute value a real number regardless of its sign
  20. self-involved absorbed in your own interests or thoughts etc