sex -- (either of the two categories (male or female) into which most organisms are divided; "the war between the sexes")
sex, sexual urge -- (all of the feelings resulting from the urge to gratify sexual impulses; "he wanted a better sex life"; "the film contained no sex or violence")
sex, gender, sexuality -- (the properties that distinguish organisms on the basis of their reproductive roles; "she didn't want to know the sex of the foetus")
Overview of verb sex
The verb sex has 2 senses
arouse, sex, excite, turn on, wind up -- (stimulate sexually; "This movie usually arouses the male audience")