swallowtail
noun [ C ] uk/ˈswɒl.əʊˌteɪl/ us/ˈswɑː.loʊˌteɪl/
凤蝶
a type of large colourful butterfly
swallowtail
adjective uk/ˈswɒl.əʊˌteɪl/ us/ˈswɑː.loʊˌteɪl/
燕尾形的，剪刀状的
having a shape that is divided into two at one end, so that it has two points
The flag has a swallowtail shape. 旗帜呈燕尾状。
（衣服）燕尾式的
used to describe a jacket or coat that has two long pointed parts at the back
He wore a white bow tie and a swallowtail coat. 他打着白色领结，穿着燕尾服。