A spur is a lateral ridge or tongue of land descending from a hill, mountain or main crest of a ridge.^[1][2] It can also be defined as another hill or mountain range which projects in a lateral direction from a main hill or mountain range.^[3]

Examples of spurs include:

• Abbott Spur, which separates the lower ends of Rutgers Glacier and Allison Glacier on the west side of the Royal Society Range in Victoria Land, Antarctica
• Boott Spur, a subpeak of Mount Washington
• Kaweah Peaks Ridge, a spur of the Great Western Divide, a sub-range of California's Sierra Nevada^[4]
• Kelley Spur, four kilometres (two nautical miles) east of Spear Spur on the south side of Dufek Massif in the Pensacola Mountains, Antarctica
• Geneva Spur on Mount Everest
• Sperrin Mountains in Northern Ireland^[5]

• Draw or re-entrant, the low ground between two spurs
• Spur castle

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