1. (verb)immunize, immunise, inoculate, vaccinate perform vaccinations or produce immunity in by inoculation "We vaccinate against scarlet fever"; "The nurse vaccinated the children in the school"
Definitions of 'vaccinate'
Webster 1913 Dictionary
1. (verb)vaccinate to inoculate with the cowpox by means of a virus, called vaccine, taken either directly or indirectly from cows