What is another name for a small rock that has ton in the word?

There isn't a common word for a small rock that includes "ton" in it. However, here are a few options:

* Pebble: This is a common term for a small, smooth rock.

* Shingle: This refers to small, flat pieces of rock, often found on beaches.

* Gravel: This describes a collection of small, loose rocks.

It's possible there are less common or regional terms for a small rock with "ton" in it. If you can provide more context, I might be able to give a more specific answer.