swallowtail

• Nom désignant un papillon de la famille des Papilionidae, caractérisé par des prolongements en forme de queue sur ses ailes postérieures ; par extension, il peut aussi désigner un habit de cérémonie masculin à basques longues et pointues dans le dos, ou une forme d'étrave ou de pièce en queue d'aronde.

A noun referring to a man's formal jacket that has two long, tapering tails at the back, typically worn as part of full evening dress.

1. Formal coatB2formal

   A man's formal evening coat with two long, pointed tails at the back, typically worn for very formal occasions.

   Habit à queue de pie

   • The groom wore a classic black swallowtail to the wedding.
   • At the gala, all the men were dressed in swallowtails and white gloves.
   • He looked distinguished in his swallowtail and top hat.

   Synonymesswallow-tailed coattail coattailcoat

2. B1formal

   A large, colorful butterfly with distinctive tail-like extensions on its hindwings.

   Papillon queue d'hirondelle

   • A beautiful swallowtail butterfly landed on the flower.
   • The swallowtail is one of the most recognizable butterflies in the world.
   • We spotted a swallowtail during our hike in the forest.