This is the 3454th most frequent Chinese word.
招牌
"Signboard" or "Trademark."
招牌 here refers to a 'specialty' or 'signature offer' of the restaurant, often indicative of its best item.
这家餐厅的招牌菜是辣子鸡。
The signature dish of this restaurant is Spicy Chicken.
招牌 in this context refers to 'signboard' or 'placard' used to identify and advertise the name of a shop or business.
街头的招牌广告五颜六色,吸引了许多行人。
The colorful shop signs on the street attracted many pedestrians.
招牌 here metaphorically denotes a 'highlight' or 'main attraction' of an event or production.