One of the mysteries of the English language finally explained.
Informal (chiefly Scottish) a person of high rank, position, or importance; a grandee, a bigwig; (in plural) the powers that be, the top brass.
Early 20th century; earliest use found in Caledonian. From high + heid, variant of head + yin, variant of one.
In this article we explore how to impress employers with a spot-on CV.