6 definitions by Alistair MacIlherron

Top Definition
A chain is a unit of length; it measures 66 feet. The chain in wildland firefighting is used as the measure of the rate of spread in chains per hour.

It is also used a lot by the USDA Forest Service by hand crews to see how far they have dug line or how far they have to go.
"How much farther are we going?"

"About 4 chains." (264 ft.)

"The wildland fire is spreading at 40 chains an hour." (2640 ft. or 1/2 a mile in 1 hour)
by Alistair MacIlherron September 24, 2009
At a wildland fire a group of Chiefs, 3 or more, (usually Local Agency) that stand around and watch a wildfire running and getting bigger. They usually have their arms crossed and thoughtful expression on their faces.
As you're ariving on scene.

Check out the Nativity Scene over there.
by Alistair MacIlherron September 21, 2009
Pronounced: Ethel Methyl Bad Shit

A chemical or gas that the effect or name of it is unsure but you know that it is bad.

Also See Ethelmethyldieforsurenall
Bob: Hey Steve, what is it in that bottle it sure looks dangerous.

Steve: I don't know, probably ethelmethylbadshit.
by Alistair MacIlherron September 23, 2009
CDF
Copenhagen Dependant Firefighters.

This is a slang term used to refer the California Department of Forestry and Fire Protection. Or more commonly known as CDF.
CDF
by Alistair MacIlherron September 21, 2009
Pronounced: Ethel Methyl Die For Sure 'n All

A chemical or gas that the effect or name of it is unsure but you know that it is bad.
Bob: Hey Steve, what is it in that bottle? It sure looks dangerous.

Steve: I don't know, probably ethelmethyldieforsurenall.
by Alistair MacIlherron September 28, 2009
Literally means fire cloud. These clouds are produced when a smoke column created by a wildland fire caps out (has an ice cap) creating in all intents and purposes a cumulonimbus cloud. These clouds have been known to produce lightning, hail, light precipitation and on occasions have been known to put out the fire.
Hey take a look at that pyrocumulus that is forming over the wildland fire.
by Alistair MacIlherron September 21, 2009

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