A path through the air made easy for aerial navigation by steady winds.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). air line. Retrieved September 20, 2026, from http://smartdefine.org/air_line/definitions/1971979 |
| Chicago | Webster's. 2011. "air line" http://smartdefine.org/air_line/definitions/1971979 (accessed September 20, 2026). |
| Harvard | Webster's 2011, air line, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/air_line/definitions/1971979>. |
| MLA | Webster's. "air line" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/air_line/definitions/1971979> |