[{"Bold_text": "noun", "List Items": ["the tail of a swallow a deeply forked tail like that of a swallow.", "any of several butterflies of the genus Papilio,characterized by elongated hindwings that resemble the tail of a swallow ,such as P. polyxenesblack swallowtail.Compare spicebush swallowtail spicebush swallowtail, tiger swallowtail tiger swallowtail, zebra swallowtail zebra swallowtail.", "tailcoat(def) tailcoat(def)."]}]