ice jam

ice jam
1. an obstruction of broken river ice in a narrow part of a channel.
2. a mass of lake or sea ice broken and piled up against the shore by wind pressure.
[1840-50]

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Universalium. 2010.

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  • ice jam — 1. an obstruction of broken river ice in a narrow part of a channel. 2. a mass of lake or sea ice broken and piled up against the shore by wind pressure. [1840 50] * * * ice jam, 1. a) a mass of broken ice obstructing a river: »A cofferdam… …   Useful english dictionary

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  • ice in lakes and rivers — Introduction       a sheet or stretch of ice forming on the surface of lakes and rivers when the temperature drops below freezing (0° C [32° F]). The nature of the ice formations may be as simple as a floating layer that gradually thickens, or it …   Universalium

  • Ice dam — An ice dam (or ice jam) occurs when water builds up behind a blockage of ice. Ice dams can occur in various ways.Caused by a glacierSometimes a glacier flows down a valley to a confluence where the other branch carries an unfrozen river. The… …   Wikipedia

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  • Jam — Jam, n. [Prob. fr. jam, v.; but cf. also Ar. jamad ice, jelly, j[=a]mid congealed, jamd congelation, ice.] A preserve of fruit boiled with sugar and water; also called {jelly}; as, raspberry jam; currant jam; grape jam. [1913 Webster] {Jam nut}.… …   The Collaborative International Dictionary of English

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