spam

noun

• 1irrelevant or unsolicited messages sent over the Internet, typically to large numbers of users, for the purposes of advertising, phishing, spreading malware, etc..
• unwanted or intrusive advertising on the Internet: [as modifier]:an autogenerated spam website

• 2 (Spam) trademark a tinned meat product made mainly from ham.

verb

• send the same message indiscriminately to (a large numbers of Internet users).