Mons Piton is an isolated lunar mountain that is located in the eastern part of the Mare Imbrium, to the north-northwest of the crater Aristillus. North and northeast of this massif is the Montes Alpes range, forming the northeast edge of the lunar mare. It is slightly elongated along toward the northwest, with ridge lines to the south, northwest, and west. (wikipedia entry)
A mons is a mountain. On the Moon they are named after terrestrial mountain ranges, nearby craters, and deceased scientists who have made outstanding or fundamental contributions to their fields.