1. poppet valve a mushroom-shaped valve that rises perpendicularly from its seat; commonly used in internal-combustion engines
  2. Potos flavus arboreal fruit-eating mammal of tropical America with a long prehensile tail
  3. puppet ruler a leader or ruler who is chosen by a despot to head a government
  4. spitefulness malevolence by virtue of being malicious or spiteful or nasty
  5. doubtfulness the state of being unsure of something
  6. hepatoflavin a B vitamin that prevents skin lesions and weight loss
  7. Gyps fulvus large vulture of southern Europe and northern Africa having pale plumage with black wings
  8. safety valve a valve in a container in which pressure can build up
  9. puppet leader a leader or ruler who is chosen by a despot to head a government
  10. heart valve a valve to control one-way flow of blood
  11. poppy mallow a plant of the genus Callirhoe having palmately cleft leaves and white to red or purple flowers borne throughout the summer
  12. bicuspid valve valve with two cusps
  13. slide valve valve that opens and closes a passageway by sliding over a port
  14. puppet play a show in which the actors are puppets
  15. devolve pass on or delegate to another
  16. puppet show a show in which the actors are puppets
  17. bivalve marine or freshwater mollusks having a soft body with platelike gills enclosed within two shells hinged together
  18. ball valve any valve that checks flow by the seating of a ball
  19. pep talk a speech of exhortation attempting to instill enthusiasm and determination in a team or staff
  20. peptidase any enzyme that catalyzes the splitting of proteins into smaller peptide fractions and amino acids by a process known as proteolysis