N a space on the reverse of a coin or medal below the central design, often containing the date, place of minting, etc (铸币或勋章的中央图案下部用以刻记日期、铸币地点等的)空白处
N（名词） a space on the reverse of a coin or medal below the central design, often containing the date, place of minting, etc (铸币或勋章的中央图案下部用以刻记日期、铸币地点等的)空白处