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 ?
Dave Nixon, a local potholer and leading underground explorer, discovered the cave after finding an account by an obscure 18th century academic in a university library.
We launched a poster campaign in East Lothian asking the public and people who have hobbies, such as abseilers and potholers, if they would help search for her.
It was a story of three potholers who had been lost in a cave in the Yorkshire Dales.
A COVENTRY firefighter was among rescuers who pulled out six British potholers trapped in a cave in Mexico for more than a week.
THE British potholers rescued from a waterlogged cavern in Mexico, after being trapped for more than a week, were plunged into more trouble today.
Starring: Shauna Macdonald, Natalie Mendoza Passable retread of Neil Marshall's original as potholers meet grisly ends after venturing into the caves.
For potholers, there are a number of charted caves in the area.
POTHOLERS swept to their deaths in a cave will be named by police today.
The Petzl range is well known to explorers, potholers and roadside patrolmen, although perhaps not to so many motorists.
When you hear of the rescues, what you don't hear is that they are carried out by gallant teams of volunteer cavers offering their services free of charge, and not the emergency services; errant potholers aren't a drain on taxpayers' money.
THE six dopey potholers who got themselves stuck in a Mexican cave have returned home burbling complaints about their treatment at the hands of the local authorities.
THE leader of a group of British potholers expelled from Mexico yesterday arrived home and insisted they had done nothing to violate their tourist visas.