1. arcus a whitish deposit in the shape of an arc that is sometimes seen in the cornea
  2. arccos the inverse function of the cosine
  3. Argus a giant with 100 eyes
  4. sarcasm witty language used to convey insults or scorn
  5. Argos an ancient city in southeastern Greece
  6. argus large brilliantly patterned East Indian pheasant
  7. Orcus god of the underworld; counterpart of Greek Pluto
  8. archaise give an archaic appearance of character to
  9. aurochs large recently extinct long-horned European wild ox
  10. arcane requiring secret or mysterious knowledge
  11. air gas a gas made of carbon monoxide and hydrogen and nitrogen
  12. argosy one or more large merchant ships
  13. orchis any of various deciduous terrestrial orchids having fleshy tubers and flowers in erect terminal racemes
  14. arras a wall hanging of handwoven fabric with pictorial designs
  15. earwax a soft yellow wax secreted by glands in the ear canal
  16. archaize give an archaic appearance of character to
  17. Arca type genus of the family Arcidae: ark shells and blood clams
  18. Aras a river that rises in northeastern Turkey (near the source of the Euphrates) and flows generally eastward through Armenia to the Caspian Sea; ancient name was Araxes
  19. carcass the dead body of an animal
  20. fracas a noisy quarrel