Source : Webster's Revised Unabridged Dictionary (1913)

Tambour \Tam"bour\, v. t. [imp. & p. p. {Tamboured}; p. pr. &
   vb. n. {Tambouring}.]
   To embroider on a tambour.

Tambour \Tam"bour\, n.
   1. (Mus.) A kind of small flat drum; a tambourine.

   2. A small frame, commonly circular, and somewhat resembling
      a tambourine, used for stretching, and firmly holding, a
      portion of cloth that is to be embroidered; also, the
      embroidery done upon such a frame; -- called also, in the
      latter sense, {tambour work}.

   3. (Arch.) Same as {Drum}, n., 2
      (d) .

   4. (Fort.) A work usually in the form of a redan, to inclose
      a space before a door or staircase, or at the gorge of a
      larger work. It is arranged like a stockade.

   5. (Physiol.) A shallow metallic cup or drum, with a thin
      elastic membrane supporting a writing lever. Two or more
      of these are connected by an India rubber tube, and used
      to transmit and register the movements of the pulse or of
      any pulsating artery.

Source : WordNet®

tambour
     n 1: a frame made of two hoops; used for embroidering [syn: {embroidery
          frame}, {embroidery hoop}]
     2: a drum