henry
n. countablen. a slang term for a specific amount of money, usually 800 pounds. It comes from the name of King Henry VIII because he was the eighth Henry.
n. a slang term for the sum of eight hundred pounds sterling. Derived from the association with King Henry VIII, functioning as rhyming or numerical slang for 'eight'.
The car repairs cost me a Henry.
He managed to save a Henry by the end of the month to pay for his holiday.
In certain London financial circles, referring to an eight-hundred-pound fee as a Henry remains a common, if somewhat dated, colloquialism.
From Middle English Henry, from Old French (and Anglo-Norman) Henri, from Frankish Haimrik, from Proto-Germanic Haimarīks. Cognate with German Heinrich, Dutch Hendrik, Estonian Hendrik, and Old Norse Heimríkr (Danish Henrik).
Primarily used in British English slang; functions as a countable noun for the specific sum.