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- anvil cloud
- The flat, spreading top of a Cb (cumulonimbus), often shaped like an anvil. Thunderstorm anvils may spread hundreds of miles (or kilometers) downwind from the thunderstorm. Sometimes, they may spread upwind, and are called back-sheared anvils. Also called an anvil cloud.
- KUMAR, Bharat (ed.). An illustrated dictionary of aviation. New York: McGraw-Hill, c2005. 752 p.
Exceptionally clearly developed single-cell Cumulonimbus incus displaying the classic anvil shape; gusts will happen near and under it.