1. poppet valve a mushroom-shaped valve that rises perpendicularly from its seat; commonly used in internal-combustion engines
  2. bicuspid valve valve with two cusps
  3. safety valve a valve in a container in which pressure can build up
  4. puppet ruler a leader or ruler who is chosen by a despot to head a government
  5. heart valve a valve to control one-way flow of blood
  6. slide valve valve that opens and closes a passageway by sliding over a port
  7. puppet play a show in which the actors are puppets
  8. clapper valve a simple valve with a hinge on one side
  9. devolve pass on or delegate to another
  10. poppy mallow a plant of the genus Callirhoe having palmately cleft leaves and white to red or purple flowers borne throughout the summer
  11. puppet show a show in which the actors are puppets
  12. bivalve marine or freshwater mollusks having a soft body with platelike gills enclosed within two shells hinged together
  13. ball valve any valve that checks flow by the seating of a ball
  14. pep talk a speech of exhortation attempting to instill enthusiasm and determination in a team or staff
  15. aortic valve a semilunar valve between the left ventricle and the aorta
  16. bedfellow a person with whom you share a bed
  17. pyloric valve the sphincter muscle of the pylorus that separates the stomach from the duodenum
  18. estival (rare) of or occurring in summer
  19. hepatoflavin a B vitamin that prevents skin lesions and weight loss
  20. spiteful showing malicious ill will and a desire to hurt