1. Master of Science a master's degree in science
  2. master race a race that considers itself superior to all others and fitted to rule the others
  3. Aster arenosus common North American perennial with heathlike foliage and small white flower heads
  4. Pastor roseus glossy black bird with pink back and abdomen; chiefly Asian
  5. Master in Business a master's degree in business
  6. master class a class given to talented students by an expert
  7. master sergeant a senior noncommissioned officer in the Army or Marines
  8. oyster dressing stuffing made with oysters
  9. meter reading a datum about some physical state that is presented to a user by a meter or similar instrument
  10. master plan a long-term outline of a project or government function
  11. master of ceremonies a person who acts as host at formal occasions
  12. masterless having no lord or master
  13. mysterious beyond ordinary understanding
  14. Master of Arts a master's degree in arts and sciences
  15. Master of Laws an advanced law degree
  16. monetary resource assets in the form of money
  17. muster roll a list of names of officers and men in a military unit or ship's company
  18. foster son someone who is raised as a son although not related by birth
  19. masterpiece the most outstanding work of a creative artist or craftsman
  20. Aster ericoides common much-branched North American perennial with heathlike foliage and small starry white flowers