Okay kiddo, have you ever seen writing on a wall or a rock? Well, that's called an inscription. Tamil inscriptions are writing that's been found on objects like stones or copper plates that were used a long, long time ago in a place called Tamil Nadu (in India).
People who lived in Tamil Nadu a thousand years ago used these inscriptions to write down important things like laws, religious texts, and even stories about their rulers. Some of the inscriptions were written in a language called Tamil, which is still spoken today in Tamil Nadu.
These inscriptions can be really interesting to read because they give us a peek into what life was like a long, long time ago. They tell us things like what people ate, how they dressed, and what kind of work they did. They also show us how people communicated with each other in the past, before things like telephones and computers were invented.
So next time you see some writing on the wall, who knows, it might be an inscription from a long, long time ago just like the Tamil inscriptions!