Source : Webster's Revised Unabridged Dictionary (1913)

Amygdala \A*myg"da*la\ ([.a]*m[i^]g"d[.a]*l[.a]), n.; pl.
   {-l[ae]} (-l[=e]). [L., an almond, fr. Gr. 'amygda`lh. See
   {Almond}.]
   1. An almond.

   2. (Anat.)
      (a) One of the tonsils of the pharynx.
      (b) One of the rounded prominences of the lower surface of
          the lateral hemispheres of the cerebellum, each side
          of the vallecula.

Source : WordNet®

amygdala
     n : an almond-shaped neural structure in the anterior part of
         the temporal lobe of the cerebrum; intimately connected
         with the hypothalamus and the hippocampus and the
         cingulate gyrus; as part of the limbic system it plays an
         important role in motivation and emotional behavior [syn:
          {amygdaloid nucleus}, {corpus amygdaloideum}]
     [also: {amygdalae} (pl)]