Definition of "shade-tree" []

• A tree planted or valued for its shade, as distinguished from one planted or valued for its fruit, foliage, beauty, etc. (noun)

The Century Dictionary (Public Domain)

• "Soon, even shade-tree mechanics could build motors that blew away production models."
• "No, if you are lucky to have a good gunsmith and not a shade-tree blacksmith, realize your good fortune and try to stay on his good side."
• "If you can get the bus shell across the border, you will be amazed at what these shade-tree mechanics can do for you."