What does the root word pronus mean?

The root word "pronus" is not a standalone word in Latin. It's a stem of the verb "pronare", which means "to bend forward" or "to incline".

It's often used in compound words like:

* Pronoun: A word used in place of a noun (think of it as "bending forward" to refer back to something already mentioned).

* Pronate: To rotate the hand so the palm faces downward (the hand "bends forward").

* Supine: The opposite of prone, meaning lying face upwards.

So, while "pronus" itself isn't a word, it's a significant component that gives meaning to other words.