pothole

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pothole,

in geology, cylindrical pit formed in the rocky channel of a turbulent stream. It is formed and enlarged by the abrading action of pebbles and cobbles that are carried by eddies, or circular water currents that move against the main current of a stream. Potholes are most commonly found at the bottoms of eddies in rivers and in plunge pools below cataracts; sometimes potholes in a rock outcrop indicate the former site of a rapid or cataract. Potholes are often found in formerly glaciated regions where whirling columns of glacial meltwater sank well-like holes, or moulins, through the ice. Notable potholes are found in Ausable Chasm, N.Y., and Shelburne Falls, Mass. Potholes also refer to holes formed in human-made materials found in roads that are effected by natural freeze-thaw cycles or moisture (see weatheringweathering,
collective term for the processes by which rock at or near the earth's surface is disintegrated and decomposed by the action of atmospheric agents, water, and living things. Some of these processes are mechanical, e.g.
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pothole

[′pät‚hōl]
(civil engineering)
A pot-shaped hole in a pavement surface.
(geology)
A shaftlike cave opening upward to the surface.
Any bowl-shaped, cylindrical, or circular hole formed by the grinding action of a stone in the rocky bed of a river or stream. Also known as churn hole; colk; eddy mill; evorsion hollow; kettle; pot.
A vertical, or nearly vertical shaft in limestone. Also known as aven; cenote.
A small depression with steep sides in a coastal marsh; contains water at or below low-tide level. Also known as rotten spot.
(hydrology)

pothole

1. Geography
a. a deep hole in limestone areas resulting from action by running water
b. a circular hole in the bed of a river produced by abrasion
2. a deep hole, esp one produced in a road surface by wear or weathering
References in periodicals archive ?
The potholer who raised the alarm returned and remained with them until rescue teams arrived.
Rescuers searching for a potholer missing for a week in one of the UK's most dangerous caves last night found a body.
The individual who is an adventurer, a sailor, a mountaineer or a potholer still has an awful lot to go for but they are not the kind of things that grab the media headlines.
Set in a dying rural village, the movie revolves around a potholer who, after investigating a newly-discovered cavern in the countryside, is horrified to find out that his girlfriend has been attacked nearby.
A FEARLESS potholer clings precariously to a rope at the foot of the UK's biggest cave as his mate watches anxiously from the ceiling above.
But, after 20 years on the show, the event that is etched into actor Derek Thompson's mind more than any other is being lowered into a cave to rescue a potholer.
To that end, Hai Karate's bespectacled gent desperately fought off the advances of a woman with a cleavage potholers would find challenging.
Reaching the remains required a team of slim female potholers to fit through the cave's entrance.
All three potholers were initially found alive on Saturday morning, several days after they had gone missing after breaking off from a group of nine Spaniards to explore different caves.
55PM Quality British horror film in which six adventurous potholers find themselves trapped in an uncharted cave.
In the same category come potholers and those peculiar types who go metal detecting.
The school depends on the extraordinary network of talented and highly qualified climbers, potholers and mountain guides for which the area is renowned, to support its activities.