"Female" is a clearly defined word, and has been long before the internet existed. The new definition provided by MW shows they have no interest in accuracy or honesty. 99% of the world understand what male and female means, but MW bends the knee to the 1% of people who can't make up their mind which gender they want to "identify" as so the rest of us must suffer along with our language.
Go away MW. No one wants you.