Anyone know what wiry build means? I'm 5"8 140 pounds and described at wiry what's that mean?

It means you are skinnier than average, but stronger than average. Enter your age here and see what you get: www.wolframalpha.com/input/?ab=c&i=growth+chart+male,21yr,5%278%27%27,140+lbs This says that if you are 21 yo, you are lighter than almost 3/4 of people your age and height.