Estrogens (alternative spellings: oestrogens or œstrogens) are a group of steroid compounds, named for their importance in the estrous cycle, and functioning as the primary female sex hormone. They are used to generally describe womenly hormones.

The counterpart for this is testosterone.
The battle of the sexes is a game that challenges the levels of testosterone vs. estrogen to see which group is the better.
by amachi60593 February 3, 2008
An endearing way for a man to define his female friends.
What is up, my estrogen?
by suckafreebighead September 9, 2005
You can define it as xultimax
A homosexual man will have higher tidbits of estrogen, such as Xultimax.
by Darknessfate February 8, 2004
Estrogen....simply enough....is God's curse on man
Recently dumped kid: I just don't get it man...why would she dump me, kick me in the balls, then make out with my best friend on my front lawn?

Wise friend: Estrogen.
by connman August 6, 2006
Womanly, any phrase or word when said that could cause others to question one's manhood.
Guy 1: "Dude all I want to just sit back and watch Grey's Anatomy"
Guy 2: "That was rather Estrogenic!"
by Brandaminator April 2, 2010
Behavior or attitude resulting solely from a peak in estrogen, reserved primarily for women, but once upon awhile you'll see a guy do it.
Damn you and your estrogenical tyranny!!
by Uttdogg April 10, 2007
Estrogen is the primary female hormone that makes them have a big butt and that’s why they have boobs
Lisa has big boobs and she’s really feminine because she has high estrogen levels
by MissesMadMissy December 6, 2018