1. A medium that can be exchanged for goods and services and is used as a measure of their values on the market, including among its forms a commodity such as gold, an officially issued coin or note (paper), or a deposit in a checking account or other readily liquifiable account.
2. The official currency, coins, and negotiable paper notes issued by a government.
3. Assets and property considered in terms of monetary value; wealth.
4. Etymology: "mint, coinage, metal currency", from Old French moneie, from Latin moneta, "mint, coinage"; from Moneta, a cult title of the goddess Juno, in or near whose temple at Rome money was coined; perhaps from monere, "to advise, to warn" with the sense of referring to the "admonishing goddess".

Moneta, a name related to the goddess Juno

One of the epithets of the goddess Juno, the wife of Jupiter in Roman mythology, was Moneta.

When the Romans established a mint at the temple of Juno Moneta, this epithet, or name, became a generic Latin term for a place where money is made. The English words mint and money are both derived from Latin moneta.

The considerable difference between the two words may be accounted for by the widely different routs by which each came into English.

Mint has been proven to have existed in Old English in the form of mynet, and has been in the language since it first developed there and it comes from a primitive Germanic borrowing from Latin moneta which is also the source of Old High German munizza, "coin".

In Middle French, Latin moneta became moneie, which was then borrowed into Middle English in the form moneye and from which we now have incorporated the word "money".

Another version regarding the origin of the word "money"

In Roman mythology, Juno Regina was supposed to be the wife of Jupiter and queen of the heavens. Juno assumed many characters and had a host of divine responsibilities.

She watched over women, protected maidenhood, guided girls through the rites of marriage and she was the savior, the war-goddess, and the moon-goddess; however, most important of all, she was the goddess of warning.

The Romans were so grateful to Juno for telling them about the dangers ahead on various occasions that they built a temple to her on the Capitoline Hill and when coinage was devised, they set their mint in her temple, and as Juno Moneta, the goddess became the guardian of finances.

Her name Moneta was derived from the Latin word moneo, "warn", and finally entered Old French as moneie; and therefore, eventually became our word money.

Through another path, this same word, moneta, came into Old English as mynet, which finally was transformed into the word mint, that place where money is made.