1. double bond a covalent bond in which two pairs of electrons are shared between two atoms
  2. double bind an unresolvable dilemma
  3. 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
  4. double bed a bed wide enough to accommodate two sleepers
  5. double birdie shoot two strokes under par
  6. double-bedded having a double bed
  7. double agent a spy who works for two mutually antagonistic countries
  8. double knit a knit fabric similar to jersey that is made with two sets of needles producing a double thickness joined by interlocking stitches
  9. double-chinned having sagging folds of flesh beneath the chin or lower jaw
  10. double gold very tall branching herb with showy much-doubled yellow flower heads
  11. doubleton (bridge) a pair of playing cards that are the only cards in their suit in the hand dealt to a player
  12. double-jointed having unusually flexible joints especially of the limbs or fingers
  13. double-tongued marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another
  14. tableland a relatively flat highland
  15. bail bond (criminal law) money that must be forfeited by the bondsman if an accused person fails to appear in court for trial
  16. doublethink believing two contradictory ideas at the same time
  17. double bogey to shoot two strokes over par
  18. double bass largest and lowest member of the violin family
  19. double-bogey (golf) a score of two strokes over par for a hole
  20. double back retrace one's course