1. vicious circle an argument that assumes that which is to be proved
  2. vicious cycle one trouble leads to another that aggravates the first
  3. winner's circle a small area at a racecourse where awards are given to the owners of winning horses
  4. family circle rearmost or uppermost area in the balcony containing the least expensive seats
  5. dress circle a curved section or tier of seats in a hall or theater or opera house; usually the first tier above the orchestra
  6. fairy circle a ring of fungi marking the periphery of the perennial underground growth of the mycelium
  7. semicircle a plane figure with the shape of half a circle
  8. hour circle a great circle on the celestial sphere that passes through both celestial poles
  9. viciously in a brutal manner
  10. vertical circle a great circle on the celestial sphere passing through the zenith and perpendicular to the horizon
  11. precious coral the hard stony skeleton of a Mediterranean coral that has a delicate red or pink color and is used for jewelry
  12. color circle a chart in which complementary colors (or their names) are arranged on opposite sides of a circle
  13. inner circle an exclusive circle of people with a common purpose
  14. back circle a feat in which an acrobat arches the back from a prone position and bends the knees until the toes touch the head
  15. dip circle a measuring instrument for measuring the angle of magnetic dip (as from an airplane)
  16. viceregal of or relating to a viceroy
  17. genus Circaea enchanter's nightshade
  18. great circle a circular line on the surface of a sphere formed by intersecting it with a plane passing through the center
  19. polar circle a line of latitude at the north or south poles
  20. genus Circus a genus of haws comprising the harriers

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