The Collaborative International Dictionary of English v.0.48:

economy \e*con"o*my\ ([-e]*k[o^]n"[-o]*m[y^]), n.; pl.
   Economies ([-e]*k[o^]n"[-o]*m[i^]z). [F. ['e]conomie, L.
   oeconomia household management, fr. Gr. o'ikonomi`a, fr.
   o'ikono`mos one managing a household; o'i^kos house (akin to
   L. vicus village, E. vicinity) + no`mos usage, law, rule, fr.
   ne`mein to distribute, manage. See Vicinity, Nomad.]
   1. The management of domestic affairs; the regulation and
      government of household matters; especially as they
      concern expense or disbursement; as, a careful economy.
      [1913 Webster]

            Himself busy in charge of the household economies.
                                                  --Froude.
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   2. Orderly arrangement and management of the internal affairs
      of a state or of any establishment kept up by production
      and consumption; esp., such management as directly
      concerns wealth; as, political economy.
      [1913 Webster]

   3. The system of rules and regulations by which anything is
      managed; orderly system of regulating the distribution and
      uses of parts, conceived as the result of wise and
      economical adaptation in the author, whether human or
      divine; as, the animal or vegetable economy; the economy
      of a poem; the Jewish economy.
      [1913 Webster]

            The position which they [the verb and adjective]
            hold in the general economy of language. --Earle.
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            In the Greek poets, as also in Plautus, we shall see
            the economy . . . of poems better observed than in
            Terence.                              --B. Jonson.
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            The Jews already had a Sabbath, which, as citizens
            and subjects of that economy, they were obliged to
            keep.                                 --Paley.
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   4. Thrifty and frugal housekeeping; management without loss
      or waste; frugality in expenditure; prudence and
      disposition to save; as, a housekeeper accustomed to
      economy but not to parsimony.
      [1913 Webster]

   Political economy. See under Political.

   Syn: Economy, Frugality, Parsimony. Economy avoids all
        waste and extravagance, and applies money to the best
        advantage; frugality cuts off indulgences, and proceeds
        on a system of saving. The latter conveys the idea of
        not using or spending superfluously, and is opposed to
        lavishness or profusion. Frugality is usually applied to
        matters of consumption, and commonly points to
        simplicity of manners; parsimony is frugality carried to
        an extreme, involving meanness of spirit, and a sordid
        mode of living. Economy is a virtue, and parsimony a
        vice.
        [1913 Webster]

              I have no other notion of economy than that it is
              the parent to liberty and ease.     --Swift.
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              The father was more given to frugality, and the
              son to riotousness [luxuriousness]. --Golding.
        [1913 Webster]

WordNet (r) 3.0 (2006):

economy
    n 1: the system of production and distribution and consumption
         [syn: economy, economic system]
    2: the efficient use of resources; "economy of effort"
    3: frugality in the expenditure of money or resources; "the
       Scots are famous for their economy" [syn: economy,
       thriftiness]
    4: an act of economizing; reduction in cost; "it was a small
       economy to walk to work every day"; "there was a saving of 50
       cents" [syn: economy, saving]

Moby Thesaurus II by Grady Ward, 1.0:

86 Moby Thesaurus words for "economy":
   GNP, barter economy, brevity, briefness, budget,
   capitalistic economy, carefulness, cheap, cheeseparing,
   collectivized economy, compactness, conciseness, concision,
   conservation, conservatism, consumer economy, control, curtness,
   discretion, diversified economy, easy, economic, economic system,
   economy of assumption, economy of means, elegance, farm economy,
   forehandedness, free-enterprise economy, frugal, frugality,
   gross national product, handicraft economy, hot economy, husbandry,
   industrial economy, inexpensive, laissez-faire, law of parsimony,
   local economy, low, low-priced, manageable, meanness,
   mercantile economy, miserliness, moderate, modest,
   national economy, niggardliness, nominal, overheated economy,
   parsimoniousness, parsimony, paucity, pinching, planned economy,
   private-enterprise economy, providence, prudence, reasonable,
   restraint, rural economy, saving, scrimping, sensible, shabby,
   shoddy, skimping, socialistic economy, sound economy, stinginess,
   stinting, succinctness, terseness, thrift, thriftiness, token,
   town economy, unexpensive, urban economy, village economy,
   war economy, within means, world economy, worth the money



The Devil's Dictionary (1881-1906):

ECONOMY, n.  Purchasing the barrel of whiskey that you do not need for
the price of the cow that you cannot afford.


U.S. Gazetteer Places (2000):

Economy, IN -- U.S. town in Indiana
   Population (2000):    200
   Housing Units (2000): 79
   Land area (2000):     0.096963 sq. miles (0.251134 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.096963 sq. miles (0.251134 sq. km)
   FIPS code:            20152
   Located within:       Indiana (IN), FIPS 18
   Location:             39.976293 N, 85.085945 W
   ZIP Codes (1990):     47339
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Economy, IN
    Economy


U.S. Gazetteer Places (2000):

Economy, PA -- U.S. borough in Pennsylvania
   Population (2000):    9363
   Housing Units (2000): 3629
   Land area (2000):     17.698873 sq. miles (45.839868 sq. km)
   Water area (2000):    0.069934 sq. miles (0.181128 sq. km)
   Total area (2000):    17.768807 sq. miles (46.020996 sq. km)
   FIPS code:            22264
   Located within:       Pennsylvania (PA), FIPS 42
   Location:             40.638466 N, 80.184891 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Economy, PA
    Economy