1. morning sickness nausea early in the day
  2. mountain sickness nausea and shortness of breath experienced by mountain climbers above ten thousand feet
  3. motion sickness the state of being dizzy or nauseated because of the motions that occur while traveling in or on a moving vehicle
  4. sleeping sickness an encephalitis that was epidemic between 1915 and 1926
  5. sweating sickness epidemic in the 15th and 16th centuries and characterized by profuse sweating and high mortality
  6. warning signal an automatic signal (usually a sound) warning of danger
  7. milk sickness disease of livestock and especially cattle poisoned by eating certain kinds of snakeroot
  8. morning dress formal attire for men during the daytime
  9. greensickness iron deficiency anemia in young women
  10. meaninglessness the quality of having no value or significance
  11. meaningfulness the quality of having great value or significance
  12. morning star a planet seen just before sunrise in the eastern sky
  13. mourning ring a ring worn as a memorial to a dead person
  14. morning coat a man's full-dress jacket with two long tapering tails at the back
  15. ozone sickness illness that can occur to persons exposed to ozone in high-altitude aircraft; characterized by sleepiness and headache and chest pains and itchiness
  16. morning glory any of various twining vines having funnel-shaped flowers that close late in the day
  17. evening lychnis bluish-green herb having sticky stems and clusters of large evening-opening white flowers with much-inflated calyx; sometimes placed in genus Lychnis
  18. mourning band a black band worn by a man as a sign of mourning
  19. mourning cloak of temperate regions
  20. serum sickness a delayed allergic reaction to the injection of an antiserum caused by an antibody reaction to an antigen in the donor serum