having or involving sex; "sexual reproduction"; "sexual spores"

reproduction of a male and a female of that species

reproduction involving the union of female and male gametes to form a zygote

Of or pertaining to sex, or the sexes; distinguishing sex; peculiar to the distinction and office of male or female; relating to the distinctive genital organs of the sexes; proceeding from, or based upon, sex; as, sexual characteristics; sexual intercourse, connection, or commerce; sexual desire; sexual diseases; sexual generation.

of or relating to or characterized by sexuality; "sexual orientation"; "sexual distinctions"

involved in a sexual relationship; "the intimate (or sexual) relations between husband and wife"; "she had been intimate with many men"

Often: Incorrect using Sexy (Russian word "sexual" does not have that strong meaning)

characterized by or having the qualities of sex; the opposite is asexual

Sexuality · Smoking