Wordnet 3.0
NOUN (1)
1. 
 army unit smaller than a division; 
VERB (1)
1. 
 form or unite into a brigade; 
The Collaborative International Dictionary of English v.0.48:
Brigade \Bri*gade"\, n. [F. brigade, fr. It. brigata troop,
   crew, brigade, originally, a contending troop, fr. briga
   trouble, quarrel. See Brigand.]
   1. (Mil.) A body of troops, whether cavalry, artillery,
      infantry, or mixed, consisting of two or more regiments,
      under the command of a brigadier general.
      [1913 Webster]
   Note: Two or more brigades constitute a division, commanded
         by a major general; two or more divisions constitute an
         army corps, or corps d'arm['e]e. [U.S.]
         [1913 Webster]
   2. Any body of persons organized for acting or marching
      together under authority; as, a fire brigade.
      [1913 Webster]
   Brigade inspector, an officer whose duty is to inspect
      troops in companies before they are mustered into service.
   Brigade major, an officer who may be attached to a brigade
      to assist the brigadier in his duties.
      [1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Brigade \Bri*gade"\, v. t. [imp. & p. p. Brigaded; p. pr. &
   vb. n. Brigading.] (Mil.)
   To form into a brigade, or into brigades.
   [1913 Webster]
WordNet (r) 3.0 (2006):
brigade
    n 1: army unit smaller than a division
    v 1: form or unite into a brigade
Moby Thesaurus II by Grady Ward, 1.0:
75 Moby Thesaurus words for "brigade":
   KP, age group, army, army group, band, battalion, battery,
   battle group, bevy, body, bunch, cabal, cadre, cast, clique,
   cohort, column, combat command, combat team, company, complement,
   contingent, corps, coterie, covey, crew, crowd, detachment, detail,
   division, faction, field army, field train, file, fleet,
   flying column, gang, garrison, group, grouping, groupment,
   in-group, junta, kitchen police, legion, maniple, mob, movement,
   organization, out-group, outfit, pack, party, peer group, phalanx,
   platoon, posse, rank, regiment, salon, section, set, squad,
   squadron, stable, string, tactical unit, task force, team, train,
   tribe, troop, troupe, unit, wing