The Collaborative International Dictionary of English v.0.48:

Faeces \F[ae]"ces\, n. pl. [L. faex, pl. faeces, dregs.]
   Excrement; ordure; also, settlings; sediment after infusion
   or distillation. [Written also feces.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

faeces
    n 1: solid excretory product evacuated from the bowels [syn:
         fecal matter, faecal matter, feces, faeces, BM,
         stool, ordure, dejection]