Meaning
A sad face with a single tear rolling down one cheek. It is gentle, quiet sadness: feeling hurt, missing someone, being disappointed or touched enough to tear up a little.
It suits sincere sympathy and small heartbreaks: “I’m going to miss our Friday lunches so much 😢” Compared with the loudly crying face, which is often exaggerated for laughs, this one tends to read as genuine, so it fits condolences and sad news better. In playful chats it can still mean mock hurt, as in being left out of a plan.