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Region: General | Usage example: Drop me a line when you arrive.

Drop a line

Meaning

Send a short message.

Usage

Used for quick communication.

Origin & History

Origin notes can vary by region and source; this page gives the commonly reported explanation and usage context.

Fishing metaphor referencing dropping a line into the water.

Used since the 19th century in correspondence.

Related Idioms

At the drop of a hat

Immediately, without hesitation.

Drop the ball

Fail to do something expected.

Hear a pin drop

The room is extremely quiet.

More Idioms

Break the ice

To do or say something to relieve tension or get conversation going in a social situation.

Cut to the chase

Skip ahead to the most important or exciting part of something.

The ball is in your court

It is now your turn to take action or make a decision.

Throw in the towel

To concede defeat or admit a struggle isn't worth continuing.