The Collaborative International Dictionary
caecum \cae"cum\, n.; pl. C[ae]cums, L. C[ae]ca. [L. caecus blind, invisible, concealed.] (Anat.)
A cavity open at one end, as the blind end of a canal or duct.
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.