n. 1. The second best or highest group; the class next after the first. Joe was good enough in arithmetic to be put in the second class but was not good enough for the first.
Compare: FIRST CLASS. 2. The place or quarters, especially on a ship, train, or airplane which people travel who pay the next to the highest fare. Aunt May bought a ticket to travel in the second class on the boat trip.
Compare: FIRST CLASS, THIRD CLASS. 3. A class of mail that includes magazines and newspapers published at least four times a year and costs less for mailing than first class mail.
Compare: FIRST CLASS.