"hell-roarer" is a US-built system for field-illumination, using a continuous fuel/magnesium dust-flame. The system was airbourne, carried like fuel-containers under the wings of an aircraft an could provide 15 minutes of continuous illumination over an area of about 5 miles for reconaissance or battlefield-illumination. It was developed and used during the Korean War 1951-1953.
http://www.ascho.wpafb.af.mil/Korea/chap7.htm
It sometimes appears also in reports about UFO-sightings during that time, eg. in the US-sector of Germany.
you mean what you mean
It mean what you don't what does it mean.
Mean is the average.
What does GRI mean? What does GRI mean?
The haudensaunee mean irguios
The correct usage is "what DOES it mean"
as you do
he was a mean person who lived with mean people in a mean castle on a mean hill in a mean country in a mean continent in a mean world in a mean solar system in a mean galaxy in a mean universe in a mean dimension
No, but sometimes "average" means "mean" - when it doesn't mean median, geometric mean, or something else entirely.
He is as mean as a copperhead snakeHe is as mean as an angry bearHe is as mean as a bottle of brandyHe is as mean a black woman
Present - I mean, She means. Future - I will mean, She will mean. Past - Meant.
What do you mean "what does it mean"? It doesn't "mean" anything, it's just a fact.