1spam 
/ˈspæm/ noun
/ˈspæm/ noun [noncount] informal : e-mail that is not wanted : e-mail that is sent to large numbers of people and that consists mostly of advertising
▪ tips to reduce spam ▪ a spam filter [=software that identifies and blocks spam]
▪ tips to reduce spam ▪ a spam filter [=software that identifies and blocks spam]
