The Collaborative International Dictionary of English v.0.48:

Counterpoint \Coun"ter*point`\, n. [OF. contrepoincte,
   corruption of earlier counstepointe, countepointe, F.
   courtepointe, fr. L. culcita cushion, mattress (see Quilt,
   and cf. Cushion) + puncta, fem. p. p. of pungere to prick
   (see Point). The word properly meant a stitched quilt, with
   the colors broken one into another.]
   A coverlet; a cover for a bed, often stitched or broken into
   squares; a counterpane. See 1st Counterpane.
   [1913 Webster]

         Embroidered coverlets or counterpoints of purple silk.
                                                  --Sir T.
                                                  North.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Counterpoint \Coun"ter*point`\ (koun"t?r-point`), n. [Counter- +
   point.]
   An opposite point [Obs.] --Sir E. Sandys.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Counterpoint \Coun"ter*point`\, n. [F. contrepoint; cf. It.
   contrappunto. Cf. Contrapuntal.] (Mus.)
   (a) The setting of note against note in harmony; the adding
       of one or more parts to a given canto fermo or melody.
   (b) The art of polyphony, or composite melody, i. e., melody
       not single, but moving attended by one or more related
       melodies.
   (c) Music in parts; part writing; harmony; polyphonic music.
       See Polyphony.
       [1913 Webster]

             Counterpoint, an invention equivalent to a new
             creation of music.                   --Whewell.
       [1913 Webster]

WordNet (r) 3.0 (2006):

counterpoint
    n 1: a musical form involving the simultaneous sound of two or
         more melodies
    v 1: to show differences when compared; be different; "the
         students contrast considerably in their artistic abilities"
         [syn: contrast, counterpoint]
    2: write in counterpoint; "Bach perfected the art of
       counterpointing"

Moby Thesaurus II by Grady Ward, 1.0:

108 Moby Thesaurus words for "counterpoint":
   Alexandrine, Ambrosian chant, accent, accentuation, amphibrach,
   amphimacer, anacrusis, anapest, antipode, antipodes, antipole,
   antispast, antithesis, antonym, arsis, bacchius, beat, cadence,
   caesura, catalexis, chloriamb, chloriambus, colon, contra,
   contrapunto, converse, counter, counterbalance, countercheck,
   counterpoise, counterpole, counterterm, cretic, dactyl,
   dactylic hexameter, diaeresis, dimeter, dipody, dochmiac, elegiac,
   elegiac couplet, elegiac pentameter, emphasis, epitrite,
   false music, faux-bourdon, feminine caesura, foil, foot,
   heptameter, heptapody, heroic couplet, hexameter, hexapody, iamb,
   iambic, iambic pentameter, ictus, inverse, ionic, jingle, lilt,
   masculine caesura, measure, meter, metrical accent, metrical foot,
   metrical group, metrical unit, metron, molossus, mora, movement,
   musica ficta, numbers, obverse, offset, opposite, opposite number,
   paeon, pentameter, pentapody, period, polyphonism, polyphony,
   proceleusmatic, pyrrhic, quantity, reverse, rhythm, setoff,
   spondee, sprung rhythm, stress, swing, syzygy, tetrameter,
   tetrapody, tetraseme, the contrary, the other side, thesis,
   tribrach, trimeter, tripody, triseme, trochee, vis-a-vis