1. nerve center a cluster of nerve cells governing a specific bodily process
  2. nerve centre a cluster of nerve cells governing a specific bodily process
  3. proficient having or showing knowledge and skill and aptitude
  4. presenter someone who presents a message of some sort
  5. precentor the musical director of a choir
  6. barycenter (astronomy) the common center of mass around which two or more bodies revolve
  7. nerve agent a toxic gas that is inhaled or absorbed through the skin and has harmful effects on the nervous and respiratory system
  8. Dermacentor vectors of important diseases of man and animals
  9. burn center a center where patients with severe burns can be treated
  10. nerve end the terminal structure of an axon that does not end at a synapse
  11. control center the operational center for a group of related activities
  12. north-central situated in the northern part of a centrally located area in some geographical region
  13. off-center situated away from the center or axis
  14. effervescent giving off bubbles
  15. epicenter a point on the Earth's surface directly above an earthquake
  16. nervousness the anxious feeling you have when you have the jitters
  17. conference center a center where conferences can be conducted
  18. nerve cell a cell that is specialized to conduct nerve impulses
  19. nerve fiber a threadlike extension of a nerve cell
  20. dead center the position of a crank when it is in line with the connecting rod and not exerting torque