If you describe someone as a Celt, you mean that they are part of the racial group which comes from Scotland, Wales, Ireland, and some other areas such as Brittany.
英汉词典释义
n.
凯尔特人(散布在爱尔兰、威尔士、苏格兰、康沃尔郡、布列塔尼的一个欧洲民族)
7th century BC Celts arrived in Britain.公元前七世纪,凯尔特人来到英国。
英英词典释义
Noun
1. a member of a European people who occupied Britain and Spain and Gaul in pre-Roman times