Crozier is a lunar crater on the southwest edge of Mare Fecunditatis, a lunar mare in the eastern part 's near side. It lies to the east-northeast of the prominent crater Colombo, and southeast of the small crater Bellot. The narrow rim of this crater forms a distorted enclosure that has outward bulges along the northwest, southwest, and southeastern sides. The interior floor has been resurfaced and nearly filled by basaltic lava, producing a level surface with a low albedo that matches the dark hue of the nearby lunar mare. (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.