Definition of junk mail in US English:

junk mail

noun

informal
  • Unwanted or unsolicited advertising or promotional material received through the mail or by email.

    ‘my inbox is full of junk mail’
    ‘shred or discard junk mail immediately’
    • ‘It's estimated half of all this traffic is now unsolicited junk mail, or spam.’
    • ‘Unsolicited junk mail and intrusive sales calls are plagues on modern society.’
    • ‘The credit bug has become an epidemic that most householders receiving junk mail know only too well.’
    • ‘Following an experiment to see just how much junk mail he received in a year, he produced a 70 lb mail mountain.’
    • ‘She doesn't even like writing e-mail and irrationally hates receiving junk mail.’
    • ‘For instance, most people who have an email address have received junk mail or spam.’
    • ‘Why is it legal to send junk mail via the post office, but if you send it by email it's suddenly illegal?’
    • ‘In that world, senders have to pay to send mail: Paper junk mail has to have postage.’
    • ‘Of this, more than half is unsolicited junk mail otherwise known as spam, and it comes at a cost.’
    • ‘When you receive junk mail from someone unknown, these people may be the culprits.’
    printed matter, brochures, leaflets, pamphlets, circulars, flyers, handouts, handbills, mailshots, bulletins, documentation, publicity, blurb, notices, information, data, facts
    View synonyms

Pronunciation

junk mail

/ˈjəNGk ˌmāl//ˈdʒəŋk ˌmeɪl/