| sex | |
| 1. n. A category into which sexually-reproducing organisms are divided on the basis of their reproductive roles in their species. | |
| The effect of the medication is dependent upon age, sex, and other factors. | |
| 2. n. Another category, especially of humans and especially based on sexuality or gender roles. | |
| 3. n. The members of such a category, taken collectively. | |
| 4. n. The distinction and relation between these categories, especially in humans; gender. | |
| 5. n. (obsolete, or literary, with "the") Women; the human female sex and those who belong to it. | |
| 6. n. Sexual activity, usually sexual intercourse unless preceded by a modifier. | |
| 7. n. (euphemism, or slang) Genitalia: a penis or vagina. | |
| 8. v. (zoology, transitive) To determine the sex of an animal. | |
| 9. v. (chiefly US, colloquial, intransitive) To have sex with. | |
| 10. n. (obsolete) alternative form of sect. | |
