1. relating to the physical activity between people that can produce babies
2. relating to the biological differences between males and females
3. relating to or involving sex or sexuality

Examples

• The health class covered sexual education topics.
• Many animals display sexual dimorphism between males and females.
• The movie contained sexual content and was rated for mature audiences.
• Sexual reproduction requires two parents.
• The researcher studied sexual behavior in primates.
• Sexual harassment is prohibited in the workplace.
• The flowers use sexual reproduction to create seeds.