Because skip had worked as a wainwright for years he already knew how to fix the wagon what type of context clue is use word wainwright?

The context clue used here is definition/explanation.

Here's why:

* Wainwright is a word that might not be familiar to everyone.

* The sentence tells us that Skip "worked as a wainwright for years". This provides a direct explanation of what a wainwright is – someone who fixes wagons.

* This context clue helps the reader understand that Skip has the necessary skills to fix the wagon because he's a professional in that area.

Let me know if you'd like more examples of different context clues!