The Collaborative International Dictionary of English v.0.48:

Large \Large\ (l[aum]rj), a. [Compar. Larger (l[aum]r"j[~e]r);
   superl. Largest.] [F., fr. L. largus. Cf. Largo.]
   1. Exceeding most other things of like kind in bulk,
      capacity, quantity, superficial dimensions, or number of
      constituent units; big; great; capacious; extensive; --
      opposed to small; as, a large horse; a large house or
      room; a large lake or pool; a large jug or spoon; a large
      vineyard; a large army; a large city.
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   Note: For linear dimensions, and mere extent, great, and not
         large, is used as a qualifying word; as, great length,
         breadth, depth; a great distance; a great height.
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   2. Abundant; ample; as, a large supply of provisions.
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            We have yet large day.                --Milton.
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   3. Full in statement; diffuse; full; profuse.
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            I might be very large upon the importance and
            advantages of education.              --Felton.
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   4. Having more than usual power or capacity; having broad
      sympathies and generous impulses; comprehensive; -- said
      of the mind and heart.
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   5. Free; unembarrassed. [Obs.]
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            Of burdens all he set the Paynims large. --Fairfax.
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   6. Unrestrained by decorum; -- said of language. [Obs.] "Some
      large jests he will make." --Shak.
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   7. Prodigal in expending; lavish. [Obs.] --Chaucer.
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   8. (Naut.) Crossing the line of a ship's course in a
      favorable direction; -- said of the wind when it is abeam,
      or between the beam and the quarter.
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   At large.
      (a) Without restraint or confinement; as, to go at large;
          to be left at large.
      (b) Diffusely; fully; in the full extent; as, to discourse
          on a subject at large.

   Common at large. See under Common, n.

   Electors at large, Representative at large, electors, or
      a representative, as in Congress, chosen to represent the
      whole of a State, in distinction from those chosen to
      represent particular districts in a State. [U. S.]

   To give large, To go large, To run large, or To sail
   large (Naut.), to have the wind crossing the direction of a
      vessel's course in such a way that the sails feel its full
      force, and the vessel gains its highest speed. See
      Large, a., 8.

   Syn: Big; bulky; huge; capacious; comprehensive; ample;
        abundant; plentiful; populous; copious; diffusive;
        liberal.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

At \At\, prep. [AS. [ae]t; akin to OHG. az, Goth., OS., & Icel.
   at, Sw. [*a]t, Dan. & L. ad.]
   Primarily, this word expresses the relations of presence,
   nearness in place or time, or direction toward; as, at the
   ninth hour; at the house; to aim at a mark. It is less
   definite than in or on; at the house may be in or near the
   house. From this original import are derived all the various
   uses of at. It expresses:
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   1. A relation of proximity to, or of presence in or on,
      something; as, at the door; at your shop; at home; at
      school; at hand; at sea and on land.
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   2. The relation of some state or condition; as, at war; at
      peace; at ease; at your service; at fault; at liberty; at
      risk; at disadvantage.
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   3. The relation of some employment or action; occupied with;
      as, at engraving; at husbandry; at play; at work; at meat
      (eating); except at puns.
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   4. The relation of a point or position in a series, or of
      degree, rate, or value; as, with the thermometer at
      80[deg]; goods sold at a cheap price; a country estimated
      at 10,000 square miles; life is short at the longest.
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   5. The relations of time, age, or order; as, at ten o'clock;
      at twenty-one; at once; at first.
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   6. The relations of source, occasion, reason, consequence, or
      effect; as, at the sight; at this news; merry at anything;
      at this declaration; at his command; to demand, require,
      receive, deserve, endure at your hands.
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   7. Relation of direction toward an object or end; as, look at
      it; to point at one; to aim at a mark; to throw, strike,
      shoot, wink, mock, laugh at any one.
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   At all, At home, At large, At last, At length, At
   once, etc. See under All, Home, Large, Last (phrase
      and syn.), Length, Once, etc.

   At it, busily or actively engaged.

   At least. See Least and However.

   At one. See At one, in the Vocabulary.
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   Syn: In, At.

   Usage: When reference to the interior of any place is made
          prominent in is used. It is used before the names of
          countries and cities (esp. large cities); as, we live
          in America, in New York, in the South. At is commonly
          employed before names of houses, institutions,
          villages, and small places; as, Milton was educated at
          Christ's College; money taken in at the Customhouse; I
          saw him at the jeweler's; we live at Beachville. At
          may be used before the name of a city when it is
          regarded as a mere point of locality. "An English king
          was crowned at Paris." --Macaulay. "Jean Jacques
          Rousseau was born at Geneva, June, 28, 1712." --J.
          Morley. In regard to time, we say at the hour, on the
          day, in the year; as, at 9 o'clock, on the morning of
          July 5th, in the year 1775.
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WordNet (r) 3.0 (2006):

at large
    adv 1: in a general fashion; "he talked at large about his
           plans" [syn: at large, in a broad way]
    adj 1: having escaped, especially from confinement; "a convict
           still at large"; "searching for two escaped prisoners";
           "dogs loose on the streets"; "criminals on the loose in
           the neighborhood" [syn: at large(p), escaped,
           loose, on the loose(p)]

Moby Thesaurus II by Grady Ward, 1.0:

101 Moby Thesaurus words for "at large":
   across the board, afoot and lighthearted, all, all in all,
   all put together, all things considered, altogether, as a body,
   as a rule, as a whole, as an approximation, at length, at liberty,
   bodily, broadly, broadly speaking, by and large, chiefly, clear,
   collectively, commonly, corporately, detached, diffusely,
   disengaged, dispersedly, easygoing, emancipated, en bloc, en masse,
   entirely, escaped, everywhere, fled, flown, footloose,
   footloose and fancy-free, free, free and easy, free as air,
   freeborn, freed, fugitive, generally, generally speaking,
   go-as-you-please, here and there, in a body, in all,
   in all quarters, in all respects, in bulk, in detail, in extenso,
   in full, in general, in its entirety, in places, in spots,
   in the aggregate, in the clear, in the gross, in the lump,
   in the mass, in toto, liberated, loose, mainly, mostly, normally,
   on all counts, on balance, on the loose, on the whole, ordinarily,
   out of, overall, passim, predominantly, prevailingly, released,
   roughly, roughly speaking, routinely, runaway, scot-free, sparsely,
   sparsim, speaking generally, sporadically, throughout, totally,
   tout ensemble, unattached, uncommitted, unengaged, uninvolved,
   usually, well out of, wherever you look, wholly