What is the meaning of the word "sex"?

Definitions:

activities associated with sexual intercourse; most commonly referring to genital to genital insertive intercourse, but variously defined as including oral stimulation, non-insertive sex, and more noun
- They had decided that they both wanted to have sex.
all the members of a gender as a group noun
- My sex is known for being difficult.
genitalia noun
- My sex is something I'd never show in public.
the feelings resulting from the urge to gratify sexual impulses noun
- We wanted a better sex life.
the female gender noun
- The sex of Venice are undoubtedly of a distinguished beauty.
the properties that distinguish organisms on the basis of their reproductive roles noun
- It doesn't matter what sex you are.
to determine the gender of animals verb
- I sexed the chickens into the right coops, to keep the roosters isolated.
to stimulate sexually verb
- I decided to sex the party up by dancing.