[] a piece of paper, wood, metal, etc. that has writing or a picture on it that gives you information, instructions, a warning, etc.招牌；标志◆There is a sign displaying the name of the company on the roof of the building.大厦顶部有一块标示公司名称的牌子。◆flashing neon signs闪烁的霓虹灯招牌◆a sign board招牌a mark used to represent sth符号◆a plus/minus sign (+/−)加／减号◆a euro/dollar sign (€/$)欧元／美元符号