What is the idiom history on drop a line?

The idiom "drop a line" is believed to have originated in the 19th century, likely from the practice of sending a letter by mail.

Here's the breakdown:

* "Line" referred to a line of written text in a letter.

* "Drop" signified the act of sending a letter by mail.

Think of it like this:

* You would write a letter, filling it with lines of text.

* Then, you would "drop" that letter into a mailbox, sending it to its recipient.

Therefore, "drop a line" became a shorthand way to say "write a letter" or "get in touch."

Over time, the idiom has evolved to encompass other forms of communication, including:

* Emails: "Drop me a line and let me know how things are going."

* Texts: "Drop a line if you need anything."

* Social media messages: "Drop a line on my Instagram, I'd love to hear from you!"

Although the literal meaning of "drop a line" is no longer relevant today, the idiom remains a common and casual way to suggest someone reach out and communicate.