central pit n.
See fovea centralis.
Umbilicate: Having a central pit or depression (Fig. 143, f).
A circlet with a central pit takes the place of the cross and sun.
Inside these the corpses are laid on a flagged terrace which drains into a central pit.
The hinge is straight, with a very narrow ligament, and the internal cartilage is situated in a central pit.
One of the men circled that central pit, came beside Rawson and helped him to his feet, steadying him as they crossed the room.