What does Boxing Day have to do with boxing?
early 15c., "of or pertaining to sexual desire or intercourse," from Latin venereus, from venus (genitive veneris) "sexual love, sexual desire" (see Venus). Used of sexually transmitted diseases from 1650s.
venereal ve·ne·re·al (və-nēr'ē-əl)
Transmitted by sexual intercourse.
Of or relating to a sexually transmitted disease.
Of or relating to sexual intercourse.
Of or relating to the genitals.