SEX

noun one of the groups founded on this distinction.

2. sex ·noun one of the two divisions of organic beings formed on the distinction of male and female.

3. sex ·noun the capability in plants of fertilizing or of being fertilized; as, staminate and pistillate flowers are of opposite sexes.

4. sex ·noun the distinguishing peculiarity of male or female in both animals and plants; the physical difference between male and female; the assemblage of properties or qualities by which male is distinguished from female.