Can you define technology in a way that middle school studentts will understand the meaning and the process?

I like the dictionary definition: A practical application of science in commerce and industry.
You will have to teach what practical, application means, as well as commerce and industry, but I think most MS kids could relate to that definition. Hold up an IPOD, or cell phone, or a walkman as examples.

well I think ipods,cellphones all that junk isn't good for kids even though i want a cellphone.