1. head trip an exciting or stimulating experience
  2. deathtrap any structure that is very unsafe
  3. dead drop a drop used for the clandestine exchange of intelligence information
  4. diatribe thunderous verbal attack
  5. heliotrope green chalcedony with red spots that resemble blood
  6. heartthrob an object of infatuation
  7. hat trick three scores by one player in one game
  8. heated up made warm or hot (`het' is a dialectal variant of `heated')
  9. headwater the source of a river
  10. field trip a group excursion for firsthand examination
  11. tide rip a stretch of turbulent water in a river or the sea caused by one current flowing into or across another current
  12. headstream a stream that forms the source of a river
  13. headship the position of head
  14. headwaiter a dining-room attendant who is in charge of the waiters and the seating of customers
  15. headstrong habitually disposed to disobedience and opposition
  16. head start the advantage gained by beginning early, as in a race
  17. round trip a trip to some place and back again
  18. radiotherapy (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance
  19. heads-up a warning message
  20. head shop a shop specializing in articles of interest to drug users