0 a long, flat, narrow surface, usually in a kitchen, where people can sit on high stools (= seats) and eat informal meals:
1 a small informal restaurant where breakfast is served :
2 a food shaped like a small brick containing grains and often nuts, dried fruit, etc., intended to be eaten for breakfast:
He slept in until 11, after the breakfast bars had shut down.
"We can't smoke in here," he observes (we're in a breakfast bar).
There is a breakfast bar in reception where a barman greets staff with pastries, fruit and coffee.