1. rotor head the axis around which the major rotor of a helicopter turns
  2. rhetoric study of the technique for using language effectively
  3. retread use again in altered form
  4. retort a quick reply to a question or remark
  5. root word the form of a word after all affixes are removed
  6. notoriety the state of being known for some unfavorable act or quality
  7. root rot disease characterized by root decay; caused by various fungi
  8. motored equipped with a motor or motors
  9. tread put down, place, or press the foot
  10. protrude extend out or project in space
  11. letterhead a sheet of stationery with name and address of the organization printed at the top
  12. thread a fine cord of twisted fibers used in sewing and weaving
  13. rotor blade the long airfoil that rotates to provide the lift that supports a helicopter in the air
  14. rhetorical relating to using language effectively
  15. storied having an illustrious past
  16. stairhead platform at the top of a staircase
  17. reread read anew; read again
  18. redhead someone who has red hair
  19. storeyed having stories as indicated
  20. rotated turned in a circle around an axis