third-class_mail (HyperDic hyper-dictionary)

English > 1 sense of the expression *third-class mail*:
NOUN	communication	third-class mail, third class	mail consisting of printed matter qualifying for reduced postal rates

English > *third-class mail*: 1 sense > noun 1, communication
Meaning	mail consisting of printed matter qualifying for reduced postal rates.
Synonym	third class
Narrower	junk mail	third-class mail consisting of advertising and often addressed to 'resident' or 'occupant'
Broader	mail	The bags of letters and packages that are transported / transported by the postal service

HyperDic: third-class_mail