rosette

详细解释:n. 蔷薇结, 蔷薇花饰, 装饰圆窗
【医】 玫瑰花形, 丝球, 染色质纽

英语解释：

名词 rosette:

an ornament or pattern resembling a rose that is worn as a badge of office or as recognition of having won an honorrhizoctinia disease of potatoes同义词：little potato, russet scab, stem canker