ce·cum also cae·cum 
(sēkəm)
(sēkəm)n. pl. ce·ca also cae·ca (-kə)
1. Anatomy The large pouch at the beginning of the large intestine, located in the lower right-hand side of the abdomen. Also called blind gut.
2. A sac or bodily cavity with only one opening.
[Middle English, from Latin (intestīnum) caecum, blind (intestine), neuter of caecus, blind.]
cecal adj.
cecal·ly adv.