Definition

Noun: 1. A hole that allows the passage of air: An opening or aperture designed to permit the flow or ventilation of air. 2. A local region of low pressure or descending air that causes a plane to lose height suddenly: In aviation, a pocket of unstable or sinking air that can lead to a sudden, temporary loss of altitude for an aircraft.

Usage Examples

• A hole for air passage:
  • The old cabin had an air hole in the wall to provide ventilation.
  • Ice fishermen cut an air hole in the frozen lake.
• A region of descending air (aviation):
  • The small plane hit an air hole and dropped several feet, startling the passengers.
  • Experienced pilots know how to navigate through air holes with minimal discomfort.

Advanced Usage

• The term air hole in the aviation context is considered somewhat informal. More technical terms used in meteorology and professional aviation include "air pocket" or "clear-air turbulence."
• In historical or survival contexts, an air hole can refer to a vital opening made to prevent suffocation, such as in a sealed space or an ice-covered body of water.

Variants and Related Words

• Air pocket (noun): A more common synonym, especially in aviation, for a localized region of descending air.
• Vent (noun): An opening designed to allow air, gas, or liquid to pass out of or into a confined space.
• Breathing hole (noun): A specific type of air hole, often made by animals or humans in ice.

Synonyms

• For a ventilation hole: vent, opening, aperture.
• For an aviation phenomenon: air pocket, downdraft, turbulence.

Related Phrases

• Hit an air hole: An informal phrase describing when an aircraft encounters a patch of sinking air.
  • We hit an air hole over the mountains, causing a brief moment of weightlessness.

Noun

1. a hole that allows the passage of air
2. a local region of low pressure or descending air that causes a plane to lose height suddenly