'second class' definitions:

Definition of 'second class'

(from WordNet)
adverb
By second class conveyance; "we traveled second class"
noun
Not the highest rank in a classification
noun
Not the highest quality in a classification
noun
A class of accommodations on a ship or train or plane that are less expensive than first class accommodations [syn: cabin class, second class, economy class]

Synonyms of 'second class'

From: Moby Thesaurus

Words containing 'second class'