WordWeb Online

1. People in general
    
2. Plural of he, she, it
    
3. He or she; generic third person singular pronoun, used to refer to a person or animal of either sex (this sense of 'he' is regarded as politically incorrect in some circles)
   "when you do find someone they will have a tough time catching up";
   - he
    
4. Refers to single person whose gender identity is non-binary

Encyclopedia: They