To keep to oneself, to be secretive, to be very cautious in one's dealing with people and giving nothing much or nothing at all away. (As if one were playing cards and not permitting anyone to see any of the cards.)
"He is very cautious. He plays his cards close to his chest."
"You seem to be playing your cards close to your vest."
Dr. Drew on Celebrity Rehab said "All of a sudden what had been just another Hollywood proposal became for him an unexpected blessing, an opportunity for growth. In drug recovery language, that's called a "God shot."
A food native to Pittsburgh/Western Pennsylvania in which cubes of pork and/or veal are put on a short, wooden skewer, breaded, then baked and/or fried.
I've heard that city chicken originated during the Great Depression, when folks didn't have enough money to buy full cuts of meat, so they assembled meat scraps on a wooden skewer, creating a make-shift drumstick. Hence the name.