Dictionary.net

Strictly, a disease by pustules or eruptions of any kind, but chiefly or wholly restricted to three or four diseases, -- the smallpox, the chicken pox, and the vaccine and the venereal diseases.

To infect with the pox, or syphilis.

See syphilis.

Syphilis, Variola-p. Chicken, Varicella.

Any eruptive disease; chiefly used as a vulgar name of syphilis.

n. [English, Anglo-Saxon] A pustule ; an eruption ; especially in any one of the four diseases called small-pox, chicken-pox, the vaccine disease, and the venereal disease.