A hole is an opening in or through a particular medium, usually a solid body. Holes occur through natural and artificial processes, and may be useful for various purposes, or may represent a problem needing to be addressed in many fields of engineering. Depending on the material and the placement, a hole may be an indentation in a surface (such as a hole in the ground) or may pass completely through that surface (such as a hole created by a hole puncher in a piece of paper).
A hole is an opening in or through a particular medium, usually a solid body. Holes occur through natural and artificial processes, and may be useful...
A black hole is a region of spacetime where gravity is so strong that nothing, including light and other electromagnetic waves, is capable of possessing...
In general relativity, a white hole is a hypothetical region of spacetime and singularity that cannot be entered from the outside, although energy-matter...
A glory hole (also spelled gloryhole and glory-hole) is a hole in a wall or partition, often between public lavatory cubicles or sex video arcade booths...
The Hole may refer to: The Hole (1957 film), a Japanese drama directed by Kon Ichikawa The Hole (1960 film), a French film directed by Jacques Becker...
Devils Hole is a geologic formation located in a detached unit of Death Valley National Park and surrounded by the Ash Meadows National Wildlife Refuge...
A blue hole is a large marine cavern or sinkhole, which is open to the surface and has developed in a bank or island composed of a carbonate bedrock (limestone...
Jackson Hole (originally called Jackson's Hole by mountain men) is a valley between the Gros Ventre and Teton mountain ranges in the U.S. state of Wyoming...
up rabbit hole in Wiktionary, the free dictionary. A rabbit hole is a rabbit burrow. Rabbit hole or Rabbit Hole may also refer to: Rabbit Hole, bourbon...
In E. coli and other bacteria, holE is a gene that encodes the theta subunit of DNA polymerase III. Studwell-Vaughan PS, O'Donnell M (June 1993). "DNA...
A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. The term is sometimes used to refer to doline, enclosed...
A fallstreak hole (also known as a cavum, hole punch cloud, punch hole cloud, skypunch, cloud canal or cloud hole) is a large gap, usually circular or...
In golf, a hole in one or hole-in-one (also known as an ace, mostly in American English) occurs when a ball hit from a tee to start a hole finishes in...
A hole punch, also known as hole puncher, or paper puncher, is an office tool that is used to create holes in sheets of paper, often for the purpose of...
The Chicago rat hole was a hole shaped like a rat formerly in the sidewalk of West Roscoe Street in the Roscoe Village neighborhood of Chicago, Illinois...
A sound hole is an opening in the body of a stringed musical instrument, usually the upper sound board. Sound holes have different shapes: Round in flat-top...
A murder hole or meurtrière is a hole in the ceiling of a gateway or passageway in a fortification through which the defenders could shoot, throw or pour...
Look up hole-in-the-wall in Wiktionary, the free dictionary. Hole in the Wall may refer to: In American English, an inconspicuous or unpretentious restaurant...
the free dictionary. Hell Hole or Hellhole may refer to: Gates of hell Hell Hole Gorge, a national park in Queensland Hell Hole Reservoir, an artificial...
physics, chemistry, and electronic engineering, an electron hole (often simply called a hole) is a quasiparticle denoting the lack of an electron at a position...
Key Hole (KH) is the designation for a series of American optical reconnaissance satellites: KH-1 Corona KH-2 Corona KH-3 Corona KH-4 Corona KH-5 Argon...
the deepest manmade hole in history in 1979. The 23-centimetre-diameter (9 in) boreholes were drilled by branching from a central hole. The deepest reached...
"Fire in the hole" is an expression indicating that an explosive detonation in a confined space is imminent. It originated from American miners, who needed...
A donut hole (also doughnut hole) is a type of donut formed out of small round pieces of dough. Donut holes can be plain or coated in a topping such as...
A smoke hole (smokehole, smoke-hole) is a hole in a roof for the smoke from a fire to vent. Before the invention of the smoke hood or chimney, many dwellings...
A memory hole is any mechanism for the deliberate alteration or disappearance of inconvenient or embarrassing documents, photographs, transcripts or other...
Global Information