1. double entendre a word or phrase with two meanings, one of which is indecent
  2. double standard a code applying more strictly to one group than to another
  3. double entry bookkeeper debits the transaction to one account and credits it to another
  4. double indemnity a clause in an insurance policy that provides for double the face value of the policy in the case of accidental death
  5. dependent a person who relies on another person for support
  6. double-hung window a window having two sashes that slide up and down
  7. content satisfied or showing satisfaction with things as they are
  8. Ceiba pentandra massive tropical tree with deep ridges on its massive trunk and bearing large pods of seeds covered with silky floss; source of the silky kapok fiber
  9. dipole antenna an aerial half a wavelength long consisting of two rods connected to a transmission line at the center
  10. double feature two games instead of one
  11. Mitella pentandra small plant with leaves in a basal cluster and tiny greenish flowers in slender racemes; northwestern North America to California and Colorado
  12. doubleheader two games played back-to-back
  13. double tongue play fast notes on a wind instrument
  14. double negative an affirmative constructed from two negatives
  15. double-jointed having unusually flexible joints especially of the limbs or fingers
  16. double-tongued marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another
  17. double blind a test procedure in which the identity of those receiving the intervention is concealed from both the administrators and the subjects until after the test is completed; designed to reduce or eliminate bias in the results
  18. double agent a spy who works for two mutually antagonistic countries
  19. double-decker a vehicle carrying many passengers
  20. double bond a covalent bond in which two pairs of electrons are shared between two atoms