air line
noun
air line is a noun meaning “A pipe or tube supplying air or compressed air” (English Wiktionary, September 2026). It is spelled A-I-R-L-I-N-E. The plural of air line is air lines.
What does air line mean?
noun
- 1
A pipe or tube supplying air or compressed air.
- 2
A railroad following a very flat, straight route between two endpoints in order to minimize travel times, choosing the shortest, most direct route practical even if longer route that was more advantageous was available.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of air line
- air lines plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Words people confuse with air line
Word pairs people search, with the monthly searches for “a vs b” (G: Google, B: Bing, United States).
Also written: airline (one word or two).
Sources: Google and Bing searches (September 2025 to August 2026, through DataForSEO); English Wiktionary (homophones, alternative spellings).