Definitions: (noun) A person or animal’s sex is male or female. (noun) sex is an act done by a male and a female (in this case there is sometimes an intent to make babies) or with just two men or women.
Examples: (noun) She had not had any male friends during her early life and now found it difficult to talk to members of the opposite sex. (noun) Most men in our survey say they definitely would not have sex with a new partner without using a condom.
Synonyms: nouns: intercourse. gender.
Academic Word List Sublist and Group: 3 D