Swallowtail (noun)

1. A butterfly of the family Papilionidae, having elongated tail-like extensions on the hindwings.
2. A type of butterfly that belongs to the family Papilionidae, characterized by the elongated extensions on the hindwings resembling a swallow's tail.

Origin:

Early 17th century, from the resemblance of the tail of the butterfly to the tail of a swallow.

Examples:

1. Swallowtail butterflies are found in a variety of colors, from black and yellow to orange and blue.
2. The swallowtail is one of the largest butterflies in the world, with a wingspan of up to six inches.
3. The Eastern Tiger Swallowtail is a common swallowtail butterfly found in eastern North America.
4. Swallowtail butterflies are known for their striking colors and patterns, and are a favorite of butterfly enthusiasts.
5. The swallowtail butterfly is a common sight in many gardens and meadows, with its large size and beautiful wings.