Breast-shaped hills are anthropomorphic geographic features found in various parts of the world. In some traditional cultures they were once revered as the attributes of the Mother Goddess, such as the Paps of Anu, named after Anu, an important female deity of pre-Christian Ireland. "Pap" is an archaic word for the breast or nipple of a woman. It is used in the name of a number of breast-shaped hills, particularly those with a small hilltop protuberance.

The name Mamucium that gave origin to the name of the city of Manchester is thought to derive from a Celtic language name meaning "breast-shaped hill", referring to the sandstone bluff on which the fort stood; this later evolved into the name Manchester.

Mamelon (from French "nipple") is a French name for a breast-shaped hillock. Fort Mamelon was a famous hillock fortified by the Russians and captured by the French as part of the Siege of Sevastopol during the Crimean War of the 1850s. The word mamelon is also used in volcanology to describe a particular rock formation of volcanic origin. The term was coined by the French explorer and naturalist Jean Baptiste Bory de Saint-Vincent.