Bianchini is a lunar crater that lies besides the northern Jura Mountains that ring the Sinus Iridum, in the northwestern part. The impact of this crater near the edge of the Jura Mountains pushed some material into the Sinus Iridum floor. The rim of this crater is not significantly worn, although there is a small crater along the inner side of the eastern rim. Within the inner wall is a somewhat irregular floor and a small cluster of ridges at the midpoint. (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.