Definitions
from The Century Dictionary.
- noun A passage in a mine made or used for ventilating purposes; an airway.
Etymologies
Sorry, no etymologies found.
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Examples
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He explained that by reversing the fan they could draw the smoke up through the air-course, which would clear the main passages for a time.
King Coal : a Novel Upton Sinclair 1923
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The girls had followed this procession in an air-course that exactly paralleled the trail.
Angel Island Inez Haynes Gillmore 1921
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"One time in Cedar Mountain we go see boss, say air-course blocked.
King Coal : a Novel Upton Sinclair 1923
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"Don't ye remember the time when the air-course was blocked before, and ye helped to get up the mules yeself?
King Coal : a Novel Upton Sinclair 1923
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