One of the mysteries of the English language finally explained.
1Originally: a member of an ancient tribe of people reputed to have unusually long skulls; = macrocephalus. In later use also: a person with a dolichocephalic skull. Compare "short head". Now rare.
2An aptitude for calculation or forethought; shrewdness, intelligence. Especially in "to have a long head". Now rare.
3A shrewd or intelligent person. Occasionally somewhat depreciative.
Mid 17th century (in an earlier sense). From long + head.
long head/ˈlɒŋ hɛd/
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