One of the mysteries of the English language finally explained.
1US historical US the eastern bluebird, Sialia sialis, which has blue upperparts and a chestnut breast (now historical).
2(Usually with distinguishing word) any of several Old World chats of the genus Luscinia (family Muscicapidae), which have blue upperparts.
Early 19th century.
In this article we explore how to impress employers with a spot-on CV.