Drop me a line什麼意思

"Drop me a line" is an English idiom that means to write a letter or an email. It is a casual way of asking someone to contact you or to keep in touch. The phrase is often used between friends or acquaintances who may not have seen each other for a while, and it implies that the person writing the letter should make the effort to do so.

For example, if you meet an old friend and you want to stay in touch, you might say, "It was great to see you! Drop me a line and let me know how you've been." This means you would like your friend to write to you and tell you about their life since you last saw each other.

In modern usage, "drop me a line" can also refer to sending a quick message through social media, texting, or instant messaging, as these have become common ways to keep in touch.