Named after Richard Kuhn - Austrian chemist, Nobel Prize winner 1938; (1900-1967).
Kuhn is a lunar impact crater located on the lunar far side near the Northern lunar pole. The crater is located East of the Kocher crater, Southeast of the prominent Ashbrook crater and just North of the southern lunar pole. (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.