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22 Random House Dictionary 1307 (“coitus,” “sexual intercourse” (defs. 5–6)); American Heritage Dictionary, at 1187 (“sexual intercourse” (def. 5)).

Aside from these, what is there? One definition, “to neck passionately,” Random House Dictionary 1307 (def. 8), refers to sexual conduct that is not necessarily heterosexual. But can it be seriously argued that one of the aims of Title VII is to outlaw employment discrimination against employees, whether heterosexual or homosexual, who engage in necking? And even if Title VII had that effect, that is not what is at issue in cases like those before us.

That brings us to the two remaining subsidiary definitions, both of which refer to sexual urges or instincts and their manifestations. See the fourth definition in the American Heritage Dictionary, at 1187 (“the sexual urge or instinct as it manifests itself in behavior”), and the fourth definition in both Webster’s Second and Third (“[p]henomena of sexual instincts and their manifestations,” Webster’s New International Dictionary, at 2296 (2d ed.); Webster’s Third New International Dictionary 2081 (1966)). Since both of these come after three prior definitions that refer to men and women, they are most naturally read to have the same association, and in any event, is it plausible that Title VII prohibits discrimination based on any sexual urge or instinct and its manifestations? The urge to rape?

Viewing all these definitions, the overwhelming impact is that discrimination because of “sex” was understood during the era when Title VII was enacted to refer to men and women. (The same is true of current definitions, which are reproduced in Appendix B, infra.) This no doubt explains why neither this Court nor any of the lower courts have tried to make much of the dictionary definitions of sex just