fourth-class

[ fawrth-klas, -klahs, fohrth- ]
/ ˈfɔrθˈklæs, -ˈklɑs, ˈfoʊrθ- /

adjective

of, relating to, or designated as a class next below third, as for mailing, shipping, etc.

adverb

as fourth-class matter; by fourth-class mail: Send it fourth-class.

Definition for fourth-class (2 of 2)

fourth class

noun

(in the U.S. Postal Service) the class of mail consisting of merchandise weighing one pound or more, including parcel post and all first-, second-, or third-class matter weighing 8 ounces (227 grams) or more and not sealed against inspection.

Origin of fourth class

An Americanism dating back to 1860–65

Example sentences from the Web for fourth-class

British Dictionary definitions for fourth-class

fourth-class
/ US /

adjective

of or relating to mail that is carried at the lowest rate

adverb

by fourth-class mail