from
The Collaborative International Dictionary of English v.0.48
caecum \cae"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}.
[Also spelled {cecum}.]
[1913 Webster]
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.
[1913 Webster]