messenger
A person who carries and delivers messages or packages.
A messenger is a person who carries and delivers messages, packages, or important information from one person or place to another. Before telephones, email, and text messages existed, messengers were essential: they ran between castles to deliver news of battles, carried urgent letters across cities, or brought announcements from kings to their subjects.
In ancient times, being a messenger was often a dangerous job. A messenger might ride for days to deliver urgent news, facing bad weather, bandits, or difficult terrain. Some civilizations, like the Persian Empire, created systems of relay messengers who would pass messages from rider to rider, like a relay race, to speed up delivery across vast distances.
Today we still use messengers for important deliveries that can't wait for regular mail: legal documents, medical supplies, or packages that need to arrive within hours. Bike messengers weave through city traffic to deliver urgent packages. The word has also moved into technology: messenger apps and other messaging services carry your words instantly across any distance.
You've probably heard the phrase “don't shoot the messenger.” This means you shouldn't blame someone for delivering bad news they didn't cause. If your friend tells you that practice got cancelled, getting angry at them doesn't change the situation. They're just the messenger.