Source : Webster's Revised Unabridged Dictionary (1913)

Fecula \Fec"u*la\, n.; pl. {Fecul[AE]} [L. faecula burnt tartar
   or salt of tartar, dim. of faex, faecis, sediment, dregs: cf.
   F. f['e]cule.]
   Any pulverulent matter obtained from plants by simply
   breaking down the texture, washing with water, and
   subsidence. Especially:
   (a) The nutritious part of wheat; starch or farina; -- called
       also {amylaceous fecula}.
   (b) The green matter of plants; chlorophyll.

Source : WordNet®

fecula
     n : excreta (especially of insects)
     [also: {feculae} (pl)]