The Collaborative International Dictionary of English v.0.48:

Soubrette \Sou`brette"\, n. [F.]
   A female servant or attendant; specifically, as a term of the
   theater, a lady's maid, in comedies, who acts the part of an
   intrigante; a meddlesome, mischievous female servant or young
   woman.
   [1913 Webster]

WordNet (r) 3.0 (2006):

soubrette
    n 1: a pert or flirtatious young girl
    2: a minor female role as a pert flirtatious lady's maid in a
       comedy

Moby Thesaurus II by Grady Ward, 1.0:

106 Moby Thesaurus words for "soubrette":
   Roscius, abigail, actor, actress, amah, antagonist, antihero,
   au pair girl, ayah, bad guy, barnstormer, betweenmaid, biddy, bit,
   bit part, cast, chambermaid, chaperon, character, character actor,
   character man, character woman, child actor, companion, cook, cue,
   diseur, diseuse, dramatizer, duenna, fat part, feeder,
   femme de chambre, fille de chambre, foil, gentlewoman, girl,
   handmaid, handmaiden, heavy, hero, heroine, hired girl, histrio,
   histrion, housemaid, ingenue, juvenile, kitchenmaid, lady-help,
   lady-in-waiting, lead, lead role, leading lady, leading man,
   leading woman, lines, live-in maid, live-out maid, maid,
   maidservant, matinee idol, mime, mimer, mimic, monologist, mummer,
   nursemaid, pantomime, pantomimist, parlormaid, part, person,
   personage, piece, playactor, player, protagonist, protean actor,
   reciter, role, scullery maid, servant girl, servitress, side,
   stage performer, stage player, stooge, straight man, straight part,
   stroller, strolling player, supporting character, supporting role,
   theatrical, thespian, title role, trouper, tweeny, upstairs maid,
   utility man, villain, waiting maid, walk-on, walking part, wench