plural of Hill sphere

(astronomy) The region in which a given astronomical body dominates the attraction of satellites.

A town in Ontario, Canada. / A city in Bryan County, Georgia, United States. / A residential area and named thoroughfare in Richmond, Greater London, England (OS grid ref TQ1874).

A census-designated place in Maryland.

An unincorporated community in Jefferson County, Indiana, United States. / A city, the county seat of Bollinger County, Missouri, United States. / A neighbourhood of Manhattan, New York, United States.

(biology) A reproductive behaviour of butterflies and certain other insect species in which individuals congregate on hill tops in order to find partners and mate.

(informal) Capitol Hill (a neighborhood of Denver, Colorado, United States) / (informal) Capitol Hill (a neighborhood of Seattle, Washington, United States)

A neighborhood of San Francisco, California.

A neighborhood of San Francisco, California, United States; where the headquarters of Google is located.

A neighborhood of San Francisco, California, United States. / A hill in Devon, England, United Kingdom.