Infundibulum, n. [L., a funnel, from infundere to pour in or into. See Infuse.].
A funnel-shaped or dilated organ or part; as, the infundibulum of the brain, a hollow, conical process, connecting the floor of the third ventricle with the pituitary body; the infundibula of the lungs, the enlarged terminations of the bronchial tubes. [1913 Webster]
A central cavity in the Ctenophora, into which the gastric sac leads. [1913 Webster]