名词

1. 徽章，证章（美国英语通常用button指金属小圆徽章）
A badge is a piece of metal or cloth which you wear to show that you belong to an organization or support a cause. American English usually uses button to refer to a small round metal badge.

2. 标志；标记；象征
Any feature which is regarded as a sign of a particular quality can be referred to as a badge .

1. any feature that is regarded as a sign of status (a particular power or quality or rank)

e.g. wearing a tie was regarded as a badge of respectability

2. an emblem (a small piece of plastic or cloth or metal) that signifies your status (rank or membership or affiliation etc.)

e.g. they checked everyone's badge before letting them in