The Collaborative International Dictionary of English v.0.48:

Fall \Fall\, n.
   1. The act of falling; a dropping or descending be the force
      of gravity; descent; as, a fall from a horse, or from the
      yard of ship.
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   2. The act of dropping or tumbling from an erect posture; as,
      he was walking on ice, and had a fall.
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   3. Death; destruction; overthrow; ruin.
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            They thy fall conspire.               --Denham.
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            Pride goeth before destruction, and a haughty spirit
            before a fall.                        --Prov. xvi.
                                                  18.
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   4. Downfall; degradation; loss of greatness or office;
      termination of greatness, power, or dominion; ruin;
      overthrow; as, the fall of the Roman empire.
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            Beholds thee glorious only in thy fall. --Pope.
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   5. The surrender of a besieged fortress or town; as, the fall
      of Sebastopol.
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   6. Diminution or decrease in price or value; depreciation;
      as, the fall of prices; the fall of rents.
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   7. A sinking of tone; cadence; as, the fall of the voice at
      the close of a sentence.
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   8. Declivity; the descent of land or a hill; a slope.
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   9. Descent of water; a cascade; a cataract; a rush of water
      down a precipice or steep; -- usually in the plural,
      sometimes in the singular; as, the falls of Niagara.
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   10. The discharge of a river or current of water into the
       ocean, or into a lake or pond; as, the fall of the Po
       into the Gulf of Venice. --Addison.
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   11. Extent of descent; the distance which anything falls; as,
       the water of a stream has a fall of five feet.
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   12. The season when leaves fall from trees; autumn.
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             What crowds of patients the town doctor kills,
             Or how, last fall, he raised the weekly bills.
                                                  --Dryden.
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   13. That which falls; a falling; as, a fall of rain; a heavy
       fall of snow.
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   14. The act of felling or cutting down. "The fall of timber."
       --Johnson.
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   15. Lapse or declension from innocence or goodness.
       Specifically: The first apostasy; the act of our first
       parents in eating the forbidden fruit; also, the apostasy
       of the rebellious angels.
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   16. Formerly, a kind of ruff or band for the neck; a falling
       band; a faule. --B. Jonson.
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   17. That part (as one of the ropes) of a tackle to which the
       power is applied in hoisting.
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   Fall herring (Zool.), a herring of the Atlantic (Clupea
      mediocris); -- also called tailor herring, and hickory
      shad.

   To try a fall, to try a bout at wrestling. --Shak.
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