Definition of "smarts"

A lot can be said for the infinite mercies of God, but the smarts of a good pharmacist, when you get down to it, is worth more.

1981, Philip K. Dick, Valis, page 36

"Guess that was a stupid question. Either you're smart or you're not. I am not book smart but I have street smarts. I think street smarts are important.

2007, Fern Michaels, Free Fall, page 142