sex sex /ˈsɛks/

noun

1. () Activities associated with sexual intercourse  ( sexual practice , sex activity , sexual activity , sex )
   activities associated with sexual intercourse
    They had sex in the back seat
   they had sex in the back seat
   
   
2. () Either of the two categories (male or female) into which most organisms are divided  ( sex )
   either of the two categories (male or female) into which most organisms are divided
    The war between the sexes
   the war between the sexes
   
3. The properties that distinguish organisms on the basis of their reproductive roles  ( gender , sex , sexuality )
   the properties that distinguish organisms on the basis of their reproductive roles
    She didn't want to know the sex of the foetus
   she didn't want to know the sex of the foetus
   
4. All of the feelings resulting from the urge to gratify sexual impulses  ( sex , sexual urge )
   all of the feelings resulting from the urge to gratify sexual impulses
    He wanted a better sex life
   he wanted a better sex life
    The film contained no sex or violence
   the film contained no sex or violence
   
   

verb

1. Tell the sex (of young chickens)  ( sex )
   tell the sex (of young chickens)
   
2. Stimulate sexually  ( arouse , excite , sex , turn on , wind up )
   stimulate sexually
    This movie usually arouses the male audience
   This movie usually arouses the male audience