Yakitori is grilled skewered chicken dipped in a Teriyaki-like sauce. It is a very popular appetizer at Yakitori bars and other bar-type restaurants in Japan.
Yakitori could be a dish at your dinner table, but it is more like the food you eat with drinks at bars. A lot of Yakitori bars grill their chicken on a charcoal grill, and the tasty smells of grilled meat and smoke come out to the street to attract customers. People in Japan like to go out to drink after work, and Yakitori bars are one of the most popular places to have a drink.