black swallowtail

== English == === Pronunciation === (Received Pronunciation) IPA(key): /blæk ˈswɒl.əʊˌteɪl/ (General American) IPA(key): /blæk ˈswɑ.loʊˌteɪl/ === Noun === black swallowtail (plural black swallowtails) A species of butterfly, Papilio polyxenes.