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Century Dictionary
GNU Webster's 1913
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Elsewhere on the web
Less than 12 hours later (at ~6: 30 AM Alaska time), the volcano produced another large explosive eruption, sending an ash column up ~50,000 feet / 15 km and producing what seems to be a significant lahar that traveled down the Drift River valley.— The Greenbelt
Dark lahar deposits extend north from the summit over the Drift Glacier an into the Drift River.— Boston.com Most Popular
In extreme scenarios, a flood becomes a massive debris flow known as a lahar-a deadly tsunami of mud, boulders, and uprooted trees that can gouge 100-foot-deep gullies, flatten forests, and jump longstanding banks.
The potential for renewed explosive activity is high and may resume with little warning, likely generating an ash plume and a lahar.— Belski's Blog
For a week of that field camp, they hike the Tongariro Crossing (17K dayhike, the best in NZ), map lava flows, and study the lahar hazards of the NZ volcanoes.— pfblogs.org: The Ad-Free Personal Finance Blogs Aggregator

American Heritage Dictionary (1)
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