Named after Aleksandr Andreyevich Raspletin - Soviet radio engineer (1908-1967).
Raspletin is a lunar crater that is located along the southeastern inner edge of the much larger walled plain Gagarin, on the far side. The southeastern inner wall has merged with the edge of Gagarin's rim, giving it the appearance of a much wider face along that side. The remainder of the rim is somewhat polygonal in outline, with straight faces to the north and west. The edge is eroded, with some small craters along the southern rim. (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.