The dentist identified a dens invaginatus in the patient's lateral incisor during the radiographic examination.

When the caller announced Maggie's den, everyone checked the corresponding box on their bingo cards.

When the bingo caller announced Liz's den, players with that number checked their cards.

When I heard Boris's den called in the bingo hall, I realized I was just one number away from a full card.

The wildlife photographer peered into the lion's den, waiting quietly for the cub to appear.

The old waterfront bar had earned a reputation as a den of iniquity, where rumors of bribes and illicit affairs circulated nightly.

At the annual picnic, the den mothers organized a craft table for the younger scouts.

The detective described the abandoned waterfront warehouses as dens of iniquity, where smugglers and thieves traded stolen goods under dim lights.

The wildlife photographers cautiously approached the lions' dens at dawn to capture rare family moments.

Professor Van Den Berghe will present his research on medieval trade routes tomorrow.