sex

(noun) activities associated with sexual intercourse. Synonyms: sexual activity, sexual practice, sex activity. Example: "They had sex in the back seat."

(noun) either of the two categories (male or female) into which most organisms are divided. Example: "The war between the sexes."

(noun) all of the feelings resulting from the urge to gratify sexual impulses. Synonyms: sexual urge. Examples: "He wanted a better sex life." "The film contained no sex or violence."

(noun) the properties that distinguish organisms on the basis of their reproductive roles. Synonyms: gender, sexuality. Example: "She didn't want to know the sex of the foetus."

(verb) stimulate sexually. Synonyms: arouse, excite, turn on, wind up. Example: "This movie usually arouses the male audience."

(verb) tell the sex (of young chickens).