EnglishMain Dictionary
second class
Universal Words
noun [U]
1 a way of travelling on a train or ship that costs less and is less comfortable than FIRSTCLASS. In Britain this is now usually called standard class.
2 (in Britain) the class of mail that costs less and takes longer to arrive than FIRSTCLASS:
Second class is cheaper.
3 (in the US) the system of sending newspapers and magazines by mail
4 [U,sing.] the second highest standard of degree given by a British university, often divided into upper second class and lower second class