Holes

200px|thumb|alt=Lotus seed head|The holes in Nelumbo nucifera|lotus seed heads elicit feelings of discomfort or repulsion in some people.

conceptual and mathematical opposite of an electron

right|thumb|Machine-stitched keyhole buttonhole with bar A buttonhole () is a reinforced hole in fabric that a button can pass through, allowing one piece of fabric to be secured to another. The raw edges of a buttonhole are usually finished with stitching. This may be done either by hand or by a sewing machine. Some forms of button, such as a frog, use a loop of cloth or rope instead of a buttonhole.

thumb|A hole through a dead tree 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).

thumb|300px|Potholes occur with traffic over a roadway that has been weakened by water in the supporting soil structure. A pothole is a pot-shaped depression in a road surface, usually asphalt pavement, where traffic has removed broken pieces of the pavement. It is usually the result of water in the underlying soil structure and traffic passing over the affected area. Water first weakens the underlying soil; traffic then fatigues and breaks the poorly supported asphalt surface in the affected area. Continued traffic action ejects both asphalt and the underlying soil material to create a hole i

hole in the ceiling of a gateway or passageway

musical instrument part

rat-shaped hole on a Chicago sidewalk

opening in the body of a wind instrument

also called the saphenous opening

ancient assemblage of human-made holes in Peru

hole of alveolar septum