infundibulum

Any of various funnel-shaped bodily passages, openings, structures, or parts, especially.

The stalk of the pituitary gland.

The calyx of a kidney.

The ovarian opening of a fallopian tube.

In anatomy, a funnel-shaped organ or part.

In zöol.:

The funnel or siphon of a cephalopod, formed by the coalescence or apposition of the epipodia: supposed by Huxley to be formed by the union and folding into a tubular form of processes which correspond to the epipodia of pteropods and branchiogastropods. See cut under Dibranchiata.

One of the gastric cavities of the Ctenophora, into which the gastric sac leads; a chamber connecting the gastric cavity with the entire system of canals of the body, and also leading to the aboral pores. It corresponds to the common axial cavity of actinozoans. See cut under Ctenophora.

The dilated upper extremity of the oviduct of a bird, which receives the ovum from the ovarium, corresponding to the fimbriated extremity of the Fallopian tube of a mammal.

[capitalized] A genus of mollusks.