Named after Aristarch Apollonovich Belopol'skiy - Russian astronomer (1854-1934).
Belopol'skiy is a lunar crater on the far side. It lies to the west of the crater Houzeau, and northeast of Strömgren. Just to the northwest is the crater Ioffe. The rim is somewhat eroded, particularly at the southern end where several small craterlets have worn away the rim edge. (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.