Rectum
Pronunciation : Rec"tum (-tm)
Part of Speech : n.
Etymology : [NL. (sc. intestinum), fr. L. rectus straight. See Right.] (Anat.)
Definition : Defn: The terminal part of the large intestine; -- so named because supposed by the old anatomists to be straight. See Illust. under Digestive.
Source : Webster's Unabridged Dictionary, 1913