Definition of drop (someone) a line (Entry 2 of 2) to send (someone) a brief note or message Drop me a line while you're away Learn More About drop someone a lineMake or keep in contact with someone "drop someone a line" means make or keep in contact with someone Example Sentence I'll start the first part of the project, you start the second, and drop me a line in a few days Student 1 I am going back to Brazil Student 2Meaning of Drop Someone A Line Drop Someone A Line is an idiom It is one of the most commonly used expressions in English writings Drop Someone A Line stands for (idiomatic) Write and send (someone) a note or telegram Explore Urdupoint to find out more popular Idioms and Idiom Meanings, to amplify your writings Silver Lining Idiom Wikipedia Drop someone a line idiom meaning