Source : Webster's Revised Unabridged Dictionary (1913)

Caeca \C[ae]"ca\, n. pl.
   See {C[ae]cum}.

Caecum \C[ae]"cum\, n.; pl. {C[ae]cums}, L. {C[ae]ca}. [L.
   caecus blind, invisible, concealed.] (Anat.)
   (a) A cavity open at one end, as the blind end of a canal or
       duct.
   (b) The blind part of the large intestine beyond the entrance
       of the small intestine; -- called also the {blind gut}.

   Note: The c[ae]cum is comparatively small in man, and ends in
         a slender portion, the vermiform appendix; but in
         herbivorous mammals it is often as large as the rest of
         the large intestine. In fishes there are often numerous
         intestinal c[ae]ca.

Source : WordNet®

caeca
     See {caecum}

caecum
     n : the cavity in which the large intestine begins and into
         which the ileum opens; "the appendix is an offshoot of
         the cecum" [syn: {cecum}, {blind gut}]
     [also: {caeca} (pl)]