poxn.[For pocks, OE. pokkes. See Pock. It is plural in form but is used as a singular.] (Med.) 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.()()v. t. To infect with the pox, or syphilis.()