Hey Helen, you liked the legend :)

Bazyliszek is a Polish name for the basilisk, in Greek and European bestiaries and legends, a legendary reptile reputed to be king of serpents and said to have the power of causing death by a single glance.
In common language we also use the phrase "wzrok bazyliszka", the basilisk's glance which means a glance which kills.
Today you can visit a restaurant of the same name.

There is a medieval legend about a Warsaw Bazyliszek - if interested:
A legend says that in the basements of the buildings located at the Old Town lives a Basilisk. It guarded the treasures once stored there, and every man who tried to reach them was killed by the gaze of the Basilisk, which turns men to stone. He was defeated in the end by a wandering tailor who showed the monster a mirror. The Basilisk was petrified by its own appearance, and from then on, he was no longer a threat to residents.