"Womb" as actually from a separate Old English word, wambe meaning "stomach" (modern German retains the colloquial term "Wampe" from Middle High German for "potbelly").
It is a stylized representation of the goddess Venus's hand-mirror or an abstract symbol for the goddess: a circle with a small equilateral cross underneath.
The Venus symbol also represented femininity, and in ancient alchemy stood for copper.
To comply with Wikipedia's lead section guidelines, please consider modifying the lead to provide an accessible overview of the article's key points in such a way that it can stand on its own as a concise version of the article. The term woman is usually reserved for an adult, with the term girl being the usual term for a female child or adolescent.
The term woman is also sometimes used to identify a female human, regardless of age, as in phrases such as "women's rights".