from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A maneuver in which an airplane first completes half a loop and then half a roll in order to gain altitude and change flight direction simultaneously.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An Immelmann turn.
- proper n. A surname.
After Max Immelmann (1890-1916), German aviator.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Max Immelmann, a WWI German fighter ace. (Wiktionary)