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plane

In everyday conversation, "plane" is most commonly used as a short form of "airplane." While both are correct, "plane" is more informal and frequent in spoken English. When referring to the tool or the mathematical surface, it is always "plane." Be careful not to confuse this with "plain," which refers to a flat area of land or something simple/unadorned; they sound exactly the same but have different meanings.

💬Casual Conversation

🎬Tuesday afternoon; Sarah is at her desk trying to ignore a mounting pile of work while David is in a meeting.

David Smith

Just touched down. Did you circle back on that plane ticket for the Vegas summit?

Sarah

Still waiting on your approval. I'm totally swamped.

💡

David uses 'touched down' (aviation slang for landing) and 'circle back' (corporate jargon), while Sarah uses 'swamped' (an idiom meaning overwhelmed with work). The focal point is the plane ticket required for their business trip.

Meanings

noun

A flat surface on which a straight line joining any two adjacent points on it would always be contained within the surface.

"The map represents the Earth's curved surface as a flat plane."

noun

An airplane; a powered flying vehicle with fixed wings.

"We booked our tickets on a plane to Tokyo."

noun

A tool used for smoothing the surface of wood.

"He used a hand plane to level the edge of the board."

noun

A level of existence, thought, or development.

"The meditation was intended to lift the practitioner to a higher spiritual plane."

verb (transitive)

To smooth a surface using a plane tool.

"The carpenter began to plane the rough timber."

verb (intransitive)

To glide or skim over the surface of water.

"The speedboat started to plane as it gained speed."

Last Updated: May 22, 2026•Report an Error