Greaves is a small lunarimpact crater that lies near the southwest edge of Mare Crisium. It is a circular, bowl-shaped formation with a small interior floor at the center of the sloping inner walls. The crater is intruding into the northern edge of the lava-flooded crater Lick. To the northwest is Yerkes, and to the northeast is Picard.
This formation was previously designated Lick D, a satellite crater of Lick, before it was given a name by the IAU.
Menzel, D. H.; Minnaert, M.; Levin, B.; Dollfus, A.; Bell, B. (1971). "Report on Lunar Nomenclature by the Working Group of Commission 17 of the IAU". Space Science Reviews12 (2): 136–186. doi:10.1007/BF00171763. Bibcode: 1971SSRv...12..136M.