The problem of how to define the word “woman” is a thorny one. There are many varieties of woman & so many ways to become one. One may be born a woman, socialised a woman, feeling an essence of a woman, or surgically created as a woman. The tension between these types of woman is difficult to resolve, and it is easier to define a woman as an essence not a reality.
Once you stop creating logical knots to loop in trans women, the difficulty dissolves.
All the rich variety of womanhood is encapsulated. Brown women, rich women, tribal women and business women are all included. Excluded are males who might wear lipstick, have breasts and have their penises inverted.
Without these males, you are left with the simple truth: a woman is an adult human female. Males may dress how they wish, they may modify their bodies, but they will never become women. Their identities are valid, but those identities are not female.
Once you stop trying so hard to include men, you can finally see who you are as a woman.