The Collaborative International Dictionary of English v.0.48:

Timber \Tim"ber\, n. [Probably the same word as timber sort of
   wood; cf. Sw. timber, LG. timmer, MHG. zimber, G. zimmer, F.
   timbre, LL. timbrium. Cf. Timmer.] (Com.)
   A certain quantity of fur skins, as of martens, ermines,
   sables, etc., packed between boards; being in some cases
   forty skins, in others one hundred and twenty; -- called also
   timmer. [Written also timbre.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Timber \Tim"ber\, n. [F. timbre. See Timbre.] (Her.)
   The crest on a coat of arms. [Written also timbre.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Timbre \Tim"bre\, n.
   See 1st Timber.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Timbre \Tim"bre\, n. [F., a bell to be struck with a hammer,
   sound, tone, stamp, crest, in OF., a timbrel. Cf. Timbrel.]
   1. (Her.) The crest on a coat of arms.
      [1913 Webster]

   2. (Mus.) The quality or tone distinguishing voices or
      instruments; tone color; clang tint; as, the timbre of the
      voice; the timbre of a violin. See Tone, and Partial
      tones, under Partial.
      [1913 Webster]

WordNet (r) 3.0 (2006):

timbre
    n 1: (music) the distinctive property of a complex sound (a
         voice or noise or musical sound); "the timbre of her
         soprano was rich and lovely"; "the muffled tones of the
         broken bell summoned them to meet" [syn: timbre,
         timber, quality, tone]

Moby Thesaurus II by Grady Ward, 1.0:

19 Moby Thesaurus words for "timbre":
   Klangfarbe, clang color, color, coloring, manner of speaking,
   mode of expression, mood, resonance, spirit, tonality, tone,
   tone color, tone of voice, tone quality, voce, voice,
   voice qualifier, voice quality, way of saying