junk mail
noun
unsolicited commercial mail or email.
Origin of junk mail
First recorded in 1950–55
Words nearby junk mail
junk bonds,
junk call,
junk dna,
junk food,
junk jewelry,
junk mail,
junk mailer,
junk pitch,
junk science,
junk shop,
junk shot
British Dictionary definitions for junk mail
junk mail
noun
untargeted mail advertising goods or services
Idioms and Phrases with junk mail
junk mail
Third-class mail, such as unsolicited advertisements and flyers, that is sent indiscriminately. For example, While we were on vacation the front hall filled up with junk mail. [c. 1950]