Quick meaning
Text written below a photo or video on social media to describe or add context to it.
Think of it like this
Like the label beneath an exhibit in a museum.
Where you may see this
You may see this on Facebook, Instagram, TikTok, WhatsApp groups, and other social apps.
Why it matters
Understanding the term helps you use social platforms more comfortably and spot risky or misleading behaviour.
Say it simply
Caption means: Text written below a photo or video on social media to describe or add context to it.