Look up hole in Wiktionary, the free dictionary.

A hole is a hollow place, an opening in/through a solid body, or an excavation in the ground.

Hole or holes may also refer to:

Science and healthcare

• Black hole
• Electron hole, a concept in physics and chemistry
• K-hole, a psychological state associated with ketamine use
• Sinkhole, a hole in the ground due to natural subterranean subsidence
• White hole
• Wormhole
• Hole (topology) - in a topological space, a hole is a sphere that cannot be continuously extended to a ball.

Technology

• Blind hole, a hole, usually drilled, which does not emerge on the other side of the substrate
• Buttonhole, a hole in fabric as part of a fastener
• Punchhole, a hole punched in paper, including punched cards and punched tape
• Sound hole, on a musical instrument
• Through hole, a hole, usually drilled, which emerges on the other side of the substrate
• Tone hole, an opening in a wind instrument which, when closed changes the pitch
• Touch hole, part of a gun or cannon where the powder is ignited
• Whitewater hole, a feature found in some white-water rapids

Construction

• Fox hole, a defensive fighting position
• Lightening hole a hole made in a structural member, usually of a vehicle, to lighten it
• Manhole, an opening in the ground to access the sewers or other underground services
• Murder-hole, or meurtrière, a hole in the ceiling of a gateway or passageway in a fortification through which the defenders could fire, throw, or pour harmful substances or objects down on attackers
• Porthole, a window on a ship's external hull
• Spider hole, a type of camouflaged one-man foxhole

People with the name

• Hole (surname)
• Holes (surname)

Places

• Hôle, a municipality in Belgium also called Halen
• Høle, Norway, a borough and former municipality
• Hole, Norway, a municipality in Buskerud county, Norway

Prison

• Black Hole of Calcutta, small prison or dungeon in Fort William
• Celle Hole (German: Celler Loch), a breach in the outer wall of the prison of Celle, Germany
• "The hole", prison slang describing the location for solitary confinement

Arts, entertainment, and media

Sports

• Hole (American football), a space between the defensive linemen
• Hole (golf), a segment of a golf course
• Hole in one (also known as a hole-in-one or an ace, mostly in American English), occurs when a ball hit from a tee to start a hole finishes in the cup
  • Hole-in-one Register (or United States Golf Register), the United States' official historical registry of holes-in-one
• Hole set, a position in water polo

Other uses

• Law of holes, an adage which states that "if you find yourself in a hole, stop digging"

See also

• All pages with titles beginning with Hole
• All pages with titles containing hole
• Amsterdam Airport Schiphol
• Gap (disambiguation)
• Hol (disambiguation)
• Orifice (disambiguation)
• The Hole (disambiguation)
• Void (disambiguation)
• Whole (disambiguation)