Drop a line的意思

"Drop a line" is an English idiom that means to write a brief letter or message to someone. It implies a casual, friendly communication, often used when you haven't heard from someone in a while or when you want to maintain contact without making a big effort. Here's an example of how it might be used in a conversation:

Person A: "I haven't heard from you in ages! How have you been?" Person B: "Oh, I've been great! I've been so busy with work and everything. I really should drop you a line more often."

In this context, Person B is acknowledging that they haven't been in touch and expressing a desire to communicate more regularly, even if it's just a quick note.