1. mail slot a slot through which mail can be delivered
  2. Blephilia celiata a variety of wood mint
  3. molehill a mound of earth made by moles while burrowing
  4. molded salad salad of meats or vegetables in gelatin
  5. methyl salicylate a liquid ester with a strong odor of wintergreen
  6. Mola lanceolata caudal fin has a central projection
  7. Rochelle salt a double salt used in Seidlitz powder; acts as a cathartic
  8. gill slit one of a series of slit openings in the pharynxes of fishes and aquatic amphibians through which water passes
  9. Helvella sulcata a helvella with an irregularly convoluted cap that is dark brown when young and becomes dull grey with age; the lower surface of the cap is smooth and pale grey; the stalk is thick and deeply fluted
  10. nihilist someone who rejects all theories of morality
  11. holistic emphasizing the organic relation between parts and the whole
  12. halo spot a blight of bean plants
  13. obsolete no longer in use
  14. melilot erect annual or biennial plant grown extensively especially for hay and soil improvement
  15. mercilessly without pity
  16. clean slate an opportunity to start over without prejudice
  17. double salt a solution of two simple salts that forms a single substance on crystallization
  18. Motacillidae pipits and wagtails
  19. little slam winning all but one of the tricks in a hand of bridge
  20. hillside the side or slope of a hill

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