Where did the word tomboy originate?

An english language print reference to the term tomboy can be
traced back to 1553 when it was used to describe a "rude,
boisterous boy." Another reference, in 1579, as a "bold or
immodest woman" and in 1592: "a girl who acts like a spirited
boy." This development of the word is largely a corruption,
through misinterpretation and mistaken use over centuries
and is derived from the Anglo Saxon "tumbere" meaning
dancer or romper, from the same roots as the French
"tomber," to tumble about. Hundreds of years later the
early meaning of a promiscuous boisterous girl or woman
resurfaced in the shortened slang term Tom, meaning
prostitute, when in the 1930's London Police used the term
to describe a prostitute working the Mayfair and Bayswater
areas. Australia and USA underworld slang both feature
similar references.

From girls who used to play with tonka trucks. ^_^

A tomboy today usually means a girl who isn't always "girly". She can be attractive and well-mannered, but she isn't afraid to participate in rough sports or get dirty. She can be "just on of the guys".

great question...hmm idk but im a big tomboy at heart

Googling around, it is impressive how people have problem to understand a question like [Where did the word tomboy originate?] from [What is the meaning for the word tomboy?]. Even English not been my primary and main language, I can see the difference LOL ... Anyhow, very nice explanation from the etymology of this word. Also, very English-centric too. I'm very surprised how English-centric/oriented people thinks that every culture have this word or that is it possible to translate it.

Another source is http://www.etymonline.com/index.php?search=tomboy&searchmode=none