To cook outdoors on a barbecue grill; SYN. cook out.

ETYM In the language of Indians of Guiana, a frame on which all kinds of flesh and fish are roasted or smoke-dried.
1. A cookout in which food is cooked over an open fire; especially a whole animal carcass roasted on a spit.
2. A rack to hold meat for cooking over hot charcoal usually out of doors.
3. Meat that has been barbecued or grilled in a highly seasoned sauce.