NOUN (1)

1. flavorful relish or dressing or topping served as an accompaniment to food;


VERB (3)

1. behave saucily or impudently towards;

2. dress (food) with a relish;

3. add zest or flavor to, make more interesting;
- Example: "sauce the roast"

The Collaborative International Dictionary of English v.0.48:

Sauce \Sauce\ (s[add]s), v. t. [Cf. F. saucer.] [imp. & p. p.
   Sauced (s[add]st); p. pr. & vb. n. Saucing
   (s[add]"s[i^]ng).]
   1. To accompany with something intended to give a higher
      relish; to supply with appetizing condiments; to season;
      to flavor.
      [1913 Webster]

   2. To cause to relish anything, as if with a sauce; to tickle
      or gratify, as the palate; to please; to stimulate; hence,
      to cover, mingle, or dress, as if with sauce; to make an
      application to. [R.]
      [1913 Webster]

            Earth, yield me roots;
            Who seeks for better of thee, sauce his palate
            With thy most operant poison!         --Shak.
      [1913 Webster]

   3. To make poignant; to give zest, flavor or interest to; to
      set off; to vary and render attractive.
      [1913 Webster]

            Then fell she to sauce her desires with
            threatenings.                         --Sir P.
                                                  Sidney.
      [1913 Webster]

            Thou sayest his meat was sauced with thy
            upbraidings.                          --Shak.
      [1913 Webster]

   4. To treat with bitter, pert, or tart language; to be
      impudent or saucy to. [Colloq. or Low]
      [1913 Webster]

            I'll sauce her with bitter words.     --Shak.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Sauce \Sauce\, n. [F., fr. OF. sausse, LL. salsa, properly, salt
   pickle, fr. L. salsus salted, salt, p. p. of salire to salt,
   fr. sal salt. See Salt, and cf. Saucer, Souse pickle,
   Souse to plunge.]
   1. A composition of condiments and appetizing ingredients
      eaten with food as a relish; especially, a dressing for
      meat or fish or for puddings; as, mint sauce; sweet sauce,
      etc. "Poignant sauce." --Chaucer.
      [1913 Webster]

            High sauces and rich spices fetched from the Indies.
                                                  --Sir S.
                                                  Baker.
      [1913 Webster]

   2. Any garden vegetables eaten with meat. [Prov. Eng. &
      Colloq. U.S.] --Forby. Bartlett.
      [1913 Webster]

            Roots, herbs, vine fruits, and salad flowers . . .
            they dish up various ways, and find them very
            delicious sauce to their meats, both roasted and
            boiled, fresh and salt.               --Beverly.
      [1913 Webster]

   3. Stewed or preserved fruit eaten with other food as a
      relish; as, apple sauce, cranberry sauce, etc. [U.S.]
      "Stewed apple sauce." --Mrs. Lincoln (Cook Book).
      [1913 Webster]

   4. Sauciness; impertinence. [Low.] --Haliwell.
      [1913 Webster]

   To serve one the same sauce, to retaliate in the same kind.
      [Vulgar]
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Sauce \Sauce\ (s[=o]s), n. [F.] (Fine Art)
   A soft crayon for use in stump drawing or in shading with the
   stump.
   [1913 Webster]

WordNet (r) 3.0 (2006):

sauce
    n 1: flavorful relish or dressing or topping served as an
         accompaniment to food
    v 1: behave saucily or impudently towards
    2: dress (food) with a relish
    3: add zest or flavor to, make more interesting; "sauce the
       roast"

Moby Thesaurus II by Grady Ward, 1.0:

156 Moby Thesaurus words for "sauce":
   Colbert, French dressing, Italian dressing, Lorenzo dressing,
   Ritz sauce, Russian dressing, Smitane, Soubise, alcohol, all sorts,
   allemande, answer back, aqua vitae, assemblage, assortment,
   audacity, back talk, backchat, booze, bourguignonne, brass,
   brazenness, broad spectrum, brown sauce, budge, butter, cataplasm,
   cheek, cheekiness, condiment, conglomeration, corpse reviver,
   cream sauce, crush, crust, dash, dental pulp, disrespect,
   disrespectfulness, drink, duck sauce, egg sauce, espagnole,
   firewater, flavor, gall, gallimaufry, gravy, green sauce, grog,
   hash, hint, hodgepodge, hooch, hotchpot, hotchpotch, impertinence,
   impudence, infusion, inkling, insolence, intimation, jaw, juice,
   jumble, likker, lip, magpie, marinara, mash, mayonnaise, medicine,
   medley, melange, mess, mingle-mangle, miscellany, mishmash, mix,
   mixed bag, mole, mouth, mush, nerve, odds and ends, olio,
   olla podrida, omnium-gatherum, paper pulp, paprika sauce, paste,
   pasticcio, pastiche, patchwork, pepper, pepper sauce, pertness,
   pith, plaster, porridge, potpourri, poulette, poultice, provoke,
   pudding, pulp, pulp lead, pulpwood, rag pulp, ravigote sauce,
   remoulade sauce, roux, salad, salad dressing, salmagundi, salt,
   sass, sassiness, sauciness, savor, scramble, season, seasoning,
   shade, shallot sauce, smack, smash, snake medicine, soupcon, spice,
   sponge, sprinkling, squash, stew, suggestion, sulfate pulp,
   sulfite pulp, suspicion, sweet-and-sour sauce, taint, talk back,
   tartar sauce, tempering, thought, tiger milk, tinct, tincture,
   tinge, tint, touch, trace, vestige, vinaigrette, what you will,
   white lead, wood pulp



The Devil's Dictionary (1881-1906):

SAUCE, n.  The one infallible sign of civilization and enlightenment.
A people with no sauces has one thousand vices; a people with one
sauce has only nine hundred and ninety-nine.  For every sauce invented
and accepted a vice is renounced and forgiven.