Leucippus (Moon)

Named after Leucippus - Greek philosopher (unkn-fl. c. 440 B.C.).

Leucippus is a crater. It is isolated from other named craters, although it is located just over one crater diameter to the south-southeast of the huge walled plain Landau. (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.