In Old English, wīfmann meant "female human", whereas wēr meant "male human".
Mann or monn had a gender-neutral meaning of "human", corresponding to Modern English "person" or "someone"; however, subsequent to the Norman Conquest, man began to be used more in reference to "male human", and by the late 13th century had begun to eclipse usage of the older term wēr.
The breast evolved from the sweat gland to produce milk, a nutritious secretion that is the most distinctive characteristic of mammals, along with live birth.
In mature women, the breast is generally more prominent than in most other mammals; this prominence, not necessary for milk production, is probably at least partially the result of sexual selection.
An imbalance of maternal hormonal levels and some chemicals (or drugs) may alter the secondary sexual characteristics of fetuses.
Womanhood is the period in a human female's life after she has passed through childhood and adolescence, generally around age 18.
The word woman can be used generally, to mean any female human or specifically, to mean an adult female human as contrasted with girl.
"Womb" is actually from the 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.