Named after Detlev Wulf Bronk - American neurophysiologist (1897-1975).
Bronk is an eroded crater that lies on the far side , out of sight from the Earth. It lies to the southeast of the larger crater Kovalevskaya. Less than one crater diameter to the east-northeast is the smaller crater Bobone. This crater has been worn and eroded by subsequent impacts. (wikipedia entry)
A crater is a circular depression likely created by an impact event. On the Moon they are named after deceased scientists, polar explorers, astronauts or cosmonauts.