The Collaborative International Dictionary of English v.0.48:

Gyp \Gyp\ (j[i^]p), n. [Said to be a sportive application of Gr.
   gy`ps a vulture.]
   A college servant; -- so called in Cambridge, England; at
   Oxford called a scout. [Cant]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Scout \Scout\, n. [Icel. sk[=u]ta to jut out. Cf. Scout to
   reject.]
   A projecting rock. [Prov. Eng.] --Wright.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Scout \Scout\ (skout), v. t. [Icel. sk[=u]ta a taunt; cf. Icel.
   sk[=u]ta to jut out, skota to shove, skj[=o]ta to shoot, to
   shove. See Shoot.]
   To reject with contempt, as something absurd; to treat with
   ridicule; to flout; as, to scout an idea or an apology.
   "Flout 'em and scout 'em." --Shak.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Scout \Scout\, n. [OF. escoute scout, spy, fr. escouter,
   escolter, to listen, to hear, F. ['e]couter, fr. L.
   auscultare, to hear with attention, to listen to. See
   Auscultation.]
   1. A person sent out to gain and bring in tidings;
      especially, one employed in war to gain information of the
      movements and condition of an enemy.
      [1913 Webster]

            Scouts each coast light-arm[`e]d scour,
            Each quarter, to descry the distant foe. --Milton.
      [1913 Webster]

   2. A college student's or undergraduate's servant; -- so
      called in Oxford, England; at Cambridge called a gyp; and
      at Dublin, a skip. [Cant]
      [1913 Webster]

   3. (Cricket) A fielder in a game for practice.
      [1913 Webster]

   4. The act of scouting or reconnoitering. [Colloq.]
      [1913 Webster]

            While the rat is on the scout.        --Cowper.
      [1913 Webster]

   5. A boy scout or girl scout (which see, above).
      [Webster 1913 Suppl. +PJC]

   Syn: Scout, Spy.

   Usage: In a military sense a scout is a soldier who does duty
          in his proper uniform, however hazardous his
          adventure. A spy is one who in disguise penetrates the
          enemies' lines, or lurks near them, to obtain
          information.
          [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Scout \Scout\ (skout), n. [Icel. sk[=u]ta a small craft or
   cutter.]
   A swift sailing boat. [Obs.]
   [1913 Webster]

         So we took a scout, very much pleased with the manner
         and conversation of the passengers.      --Pepys.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Scout \Scout\, v. t. [imp. & p. p. Scouted; p. pr. & vb. n.
   Scouting.]
   1. To observe, watch, or look for, as a scout; to follow for
      the purpose of observation, as a scout.
      [1913 Webster]

            Take more men,
            And scout him round.                  --Beau. & Fl.
      [1913 Webster]

   2. To pass over or through, as a scout; to reconnoiter; as,
      to scout a country.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Scout \Scout\, v. i.
   To go on the business of scouting, or watching the motions of
   an enemy; to act as a scout.
   [1913 Webster]

         With obscure wing
         Scout far and wide into the realm of night. --Milton.
   [1913 Webster]

WordNet (r) 3.0 (2006):

scout
    n 1: a person employed to keep watch for some anticipated event
         [syn: lookout, lookout man, sentinel, sentry,
         watch, spotter, scout, picket]
    2: a Boy Scout or Girl Scout
    3: someone employed to discover and recruit talented persons
       (especially in the worlds of entertainment or sports) [syn:
       scout, talent scout]
    4: someone who can find paths through unexplored territory [syn:
       scout, pathfinder, guide]
    v 1: explore, often with the goal of finding something or
         somebody [syn: scout, reconnoiter, reconnoitre]

Moby Thesaurus II by Grady Ward, 1.0:

251 Moby Thesaurus words for "scout":
   Argus, CIA man, Charley, abhor, abjure, advance guard, airhead,
   airplane spotter, ancestor, announcer, antecedent, avant-garde,
   barrack, battle line, be vigilant, be watchful, beachhead,
   bellwether, bridgehead, brush aside, buccinator, bug, bushwhacker,
   case, chaff, check out, chuck, chuck out,
   cloak-and-dagger operative, contemn, contradict,
   counterintelligence agent, counterspy, course, cover, cut at,
   decline, deny, deride, despise, dig at, dig out, dig up,
   disapprove, discard, disclaim, discount, discover, disdain,
   dismiss, disown, disregard, do, double agent, dump on,
   espionage agent, examine, except, exclude, explore, explorer, eye,
   eyeball, farthest outpost, ferret out, find, fire patrolman,
   fire warden, fireguard, first line, fish out, fleer, flout, follow,
   forebear, forefront, foregoer, forerunner, forswear,
   forward observer, front, front line, front rank, front runner,
   front-runner, frontiersman, fugleman, gaze at, gibe, go over,
   groundbreaker, grub up, guide, harbinger, have a looksee, herald,
   hold in derision, hold in view, hunt out, ignore, innovator,
   inside man, inspect, intelligence agent, investigate, jab, jab at,
   jape, jeer, keep in sight, keep in view, keep under observation,
   laugh at, laugh to scorn, lead runner, leader, line, locate,
   look after, look at, look on, look over, look upon, lookout,
   lookout man, lout, make a reconnaissance, measure, messenger,
   military-intelligence man, mock, naval-intelligence man,
   night watchman, observe, operative, outguard, outpost, overpass,
   pass by, pass over, pass through, pass up, pathfinder, patrol,
   patroller, patrolman, peep, perambulate, peregrinate, pererrate,
   picket, pioneer, play the spy, ply, point, pooh, pooh-pooh,
   precedent, precursor, predecessor, probe, pry out, push aside,
   put down, put under surveillance, quiz, rail at, railhead, rally,
   range, range over, rank out, razz, rebuff, recant, reconnoiter,
   reconnoiterer, refuse, refuse to consider, regard, reject,
   renounce, repel, repudiate, repulse, research, revile, ridicule,
   root out, roundsman, scoff, scoff at, scorn, scorn to receive,
   scour, scour the country, scout out, search out, secret agent,
   sentinel, sentry, set at defiance, shove away, slam, slap at,
   slight, slight over, sneer, sneer at, spearhead, spit upon,
   spotter, spurn, spy, spy out, spy upon, spy-catcher, stake out,
   stormy petrel, study, survey, sweep, swipe, taunt, throw away,
   throw out, track, trailblazer, trailbreaker, transit, travel over,
   travel through, traverse, treat with contempt, turn away, turn out,
   twit, uncover, undercover man, van, vanguard, vaunt-courier,
   vedette, view, voortrekker, voyage, waive, watch, watcher,
   watchkeeper, watchman