air-line

The pilot checks the air-line schedule before departure.

Definition

1. Noun:
   • A direct or straight route or connection: "air-line" refers to a straight line or direct course, often used in aviation or geometry to describe the shortest distance between two points.
   • An airline company: In informal usage, "air-line" can be a variant spelling of "airline," meaning a business that provides scheduled air transport services for passengers or cargo.

Usage Examples

• Noun:
  • The map showed an air-line between the two cities to indicate the most direct flight path. (A straight line representing the shortest route.)
  • He worked for a major air-line that flew to over fifty countries. (An airline company.)

Advanced Usage

• "as the crow flies" (synonymous concept): While not a direct compound, "air-line" often appears in contexts describing the most direct distance.
  • The air-line distance from London to Paris is only about 344 kilometers. (The straight-line distance, not following roads.)

Variants and Related Words

• Airline (n): a more common spelling for a company that operates air transport.
  • The airline announced new routes to Asia. (The company providing flights.)
• Airline (adj): relating to air transport.
  • She purchased an airline ticket for her vacation. (A ticket for a flight.)

Synonyms

• Direct route: a straight path without detours.
• Straight line: the shortest distance between two points in geometry.
• Carrier: a company that transports people or goods by air (when referring to the business sense).

Related Idioms

• "On the air-line": an older or less common phrase meaning in a direct or straight line.
  • The road ran on the air-line from the hill to the coast. (Following a straight course.)