Real Dictionary

barbecue
countable noun: A barbecue is a piece of equipment which you use for cooking on in the open air.
countable noun: If someone has a barbecue, they cook food on a barbecue in the open air.
verb: If you barbecue food, especially meat, you cook it on a barbecue.

barbecue in American English
a raised framework for smoking, drying, or broiling meat
of or for a barbecue
to prepare (meat) outdoors by roasting on a spit or broiling on a grill, usually over a charcoal fire
intransitive verb: to cook by barbecuing or to entertain at a barbecue
noun: pieces of beef, fowl, fish, or the like, roasted over an open hearth, esp. when basted in a barbecue sauce
transitive verb: to broil or roast whole or in large pieces over an open fire, on a spit or grill, often seasoning with vinegar, spices, salt, and pepper

barbecue in Hospitality
verb: If you barbecue food, especially meat, you cook it on a grill, usually over charcoal and with a highly flavored sauce.