bore

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Related to bores: Boreas, boils

bore,

inrush of water that advances upstream with a wavelike front, caused by the progress of incoming tide from a wide-mouthed bay into its narrower portion. The tidal movement tends to be retarded by friction as it reaches the shallower water and meets the river current; it therefore piles up and forms a low wall of water that moves upstream with considerable force and velocity as the tide continues to rise. In the mouth of the Amazon River a tidal bore known locally as the pororoca occurs every spring tide. It has a wall of water from 5 to 15 ft (1.5–4.6 m) high and advances at a speed of from 10 to 15 mi (16–24 km) per hr. The highest recorded bore (15 ft/4.6 m) is found in the Fuchun River near Hangzhou, China. Bores are found also in the Bay of Fundy, in Solway Firth, in the Severn, Seine, and Hugli rivers, and in Hangzhou Bay.

bore

[bȯr]
(design engineering)
Inside diameter of a pipe or tube.
(mechanical engineering)
The diameter of a piston-cylinder mechanism as found in reciprocating engines, pumps, and compressors.
To penetrate or pierce with a rotary tool.
To machine a workpiece to increase the size of an existing hole in it.
(mining engineering)
A tunnel under construction.
To cut or drill a hole for blasting, water infusion, exploration, or water or firedamp drainage.
(oceanography)
A high, breaking wave of water, advancing rapidly up an estuary. Also known as eager; mascaret; tidal bore.
A submarine sand ridge, in very shallow water, whose crest may rise to intertidal level.
(ordnance)
The interior of a gun barrel or tube.

bore

1. The inside diameter of a pipe, valve, or other fitting.
2. The circular hole made by boring.

bore

The inside diameter of the cylinder of a reciprocating engine.

bore

1
a. a circular hole in a material produced by drilling, turning, or drawing
b. the diameter of such a hole

bore

2
a high steep-fronted wave moving up a narrow estuary, caused by the tide
References in periodicals archive ?
The better bores may only require a prescribed shoot/clean regimen, and others some form of lapping or dressing.
75 times the bullet weight of a standard 12 bore (12 Gauge) Brenneke slug.
Around 100 rivers around the world are known to produce tidal bores.
Bore sizes vary greatly in the 8 s as so many were produced.
In the '60s and '70s an old 'hound dog' locator would be used to track the path of the bore--it beeped when you got over the bore head.
They want their barrels to be performing as perfectly as possible before their first match, so came up with a routine to quickly break-in a new bore.
Parker Lane made the decision to buy a Vermeer[R] D330x500 Navigator[R] to help them get more of the larger-diameter and longer-length bore projects.
The bores attracted crowds to the banks of the river in Flintshire to observe the phenomenon, which only occurs in certain estuaries around the world.
When installing cavities into bores, start by manually lining up any flats or dowels.
You could tell they were Bores by their matching clothing, and that brown was the dominant colour.
The problem with machining consecutive engine bores such as those required for camshafts or crank-shafts, said Philip Szuba of Lamb Technicon Machining Systems in Warren, Mich.