What is the origin for word quid?

The word "quid" originates from the Latin word "quid" meaning "what" or "something". Its use as slang for a British pound sterling dates back to the 18th century, likely stemming from the phrase "quid pro quo", meaning "something for something".

Here's how it likely evolved:

* "quid pro quo": Originally a Latin phrase meaning "something for something"

* "quid": The term "quid" was adopted as slang for "something" in English, particularly in the context of a deal or exchange.

* "quid" as money: Over time, "quid" started being used to refer specifically to money, likely due to the "quid pro quo" association with exchange.

* "quid" as British pound: In the 18th century, the British pound sterling became the dominant currency, solidifying "quid" as its colloquial name.

So, the origin of "quid" lies in the Latin word for "what" or "something", which eventually became slang for money and specifically the British pound.