light air

noun, Meteorology
1.
a wind of 1–3 miles per hour (0.5–1.3 m/sec).
Origin
1795-1805
Examples from the web for light air
  • As the land heats up, warm, light air above the ground begins to rise.
  • Tundra-tire equipped light air craft should also be able to land in this area.
  • While good sailors are good in all conditions, if there is any time that the poorer sailor will win, it is in light air.
  • The light air starts to rise, and low pressure forms at the ground.
British Dictionary definitions for light air

light air

noun
1.
very light air movement of force one on the Beaufort scale