简明英汉词典：
sex
[seks]
n.
性别, 男性或女性, 性欲, <口>性交, <俚>生殖器, 阴茎
vt.
区别...的性别, 引起...的性欲
美国传统词典：
sex
AHD:[s?ks]
D.J.[seks]
K.K.[sWks]
n.（名词）
The property or quality by which organisms are classified as female or male on the basis of their reproductive organs and functions.
性别：基于生殖器官和功能而将生物体分为雌或雄的性质或特点
Either of the two divisions, designated female and male, of this classification.
两性之一：这种分类中雌或雄两性中任一个
Females or males considered as a group.
男性，女性：作为一组考虑的雌或雄
The condition or character of being female or male; the physiological, functional, and psychological differences that distinguish the female and the male.See Usage Note at gender
性特征：作为雌或雄的情况或特点；区分雌雄的生理、功能和心理区别参见 gender
The sexual urge or instinct as it manifests itself in behavior.
性欲：在行为中显示自己性的强烈要求或本能
Sexual intercourse.
性交
The genitalia.
外生殖器
n.attributive.（定语名词）
Often used to modify another noun:
性：常用于修饰另一名词：
sex education; sex crimes.
性教育；性犯罪
v.tr.（及物动词）
sexed,sex.ing,sex.es
To determine the sex of (an organism, especially a hatching chicken).
辨识性别：决定（一个生物体，尤其是正在孵化中的小鸡）的性别
Slang
俚语
To arouse sexually. Often used withup.
引起性欲：引起性欲。常与up 连用
To increase the appeal or attractiveness of. Often used withup.
吸引：引起感染力或诱惑力。常与up 连用