The Collaborative International Dictionary of English v.0.48:

Around \A*round"\, prep.
   1. On all sides of; encircling; encompassing; so as to make
      the circuit of; about.
      [1913 Webster]

            A lambent flame arose, which gently spread
            Around his brows.                     --Dryden.
      [1913 Webster]

   2. From one part to another of; at random through; about; on
      another side of; as, to travel around the country; a house
      standing around the corner. [Colloq. U. S.]
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Around \A*round"\, adv. [Pref. a- + round.]
   1. In a circle; circularly; on every side; round.
      [1913 Webster]

   2. In a circuit; here and there within the surrounding space;
      all about; as, to travel around from town to town.
      [1913 Webster]

   3. Near; in the neighborhood; as, this man was standing
      around when the fight took place. [Colloq. U. S.]
      [1913 Webster]

   Note: See Round, the shorter form, adv. & prep., which, in
         some of the meanings, is more commonly used.
         [1913 Webster]

WordNet (r) 3.0 (2006):

around
    adv 1: in the area or vicinity; "a few spectators standing
           about"; "hanging around"; "waited around for the next
           flight" [syn: about, around]
    2: by a circular or circuitous route; "He came all the way
       around the base"; "the road goes around the pond"
    3: used of movement to or among many different places or in no
       particular direction; "wandering about with no place to go";
       "people were rushing about"; "news gets around (or about)";
       "traveled around in Asia"; "he needs advice from someone
       who's been around"; "she sleeps around" [syn: about,
       around]
    4: in a circle or circular motion; "The wheels are spinning
       around"
    5: (of quantities) imprecise but fairly close to correct;
       "lasted approximately an hour"; "in just about a minute";
       "he's about 30 years old"; "I've had about all I can stand";
       "we meet about once a month"; "some forty people came";
       "weighs around a hundred pounds"; "roughly $3,000"; "holds 3
       gallons, more or less"; "20 or so people were at the party"
       [syn: approximately, about, close to, just about,
       some, roughly, more or less, around, or so]
    6: in or to a reversed position or direction; "about face";
       "suddenly she turned around" [syn: about, around]
    7: to a particular destination either specified or understood;
       "she came around to see me"; "I invited them around for
       supper"
    8: all around or on all sides; "dirty clothes lying around (or
       about)"; "let's look about for help"; "There were trees
       growing all around"; "she looked around her" [syn: about,
       around]
    9: in circumference; "the trunk is ten feet around"; "the pond
       is two miles around"
    10: from beginning to end; throughout; "It rains all year round
        on Skye"; "frigid weather the year around" [syn: round,
        around]

Moby Thesaurus II by Grady Ward, 1.0:

100 Moby Thesaurus words for "around":
   about, again, alive, all about, all over, all round, all through,
   almost, along toward, anticlockwise, any which way, anyhow,
   anywise, approximately, at close quarters, at hand, at random,
   back, backward, by, by way of, circa, clockwise, close,
   close about, close at hand, close by, close upon, counterclockwise,
   encircling, enclosing, encompassing, enveloping, every which way,
   everywhence, everywhere, everywhither, existent, existing,
   far and wide, fast by, from every quarter, haphazard, haphazardly,
   hard, hard by, head over heels, heels over head, helter-skelter,
   here and there, hereabout, hereabouts, in a circle, in a spin,
   in a whirl, in all directions, in circles, in every quarter,
   in reverse, in spitting distance, in the neighborhood,
   in the vicinity, just about, living, near, near at hand,
   near enough to, near upon, nearabout, nearabouts, nearby, nearly,
   nigh, nigh about, not far, on all sides, on every side,
   only a step, over, passing by, passing through, random, randomly,
   roughly, round, round about, round and round, somewhere about,
   surrounding, thereabout, thereabouts, through, throughout,
   upwards of, via, widdershins, within call, within earshot,
   within hearing, within reach