(countable) A group, collection, category or set sharing characteristics or attributes.
The new Ford Fiesta is set to be best in the 'small family' class.
That is one class-A heifer you got there, sonny.
Often used to imply membership of a large class.
This word has a whole class of metaphoric extensions.
(countable) A social grouping, based on job, wealth, In Britain, society is commonly split into three main classes; upper class, middle class and working class.
(uncountable) The division of society into classes.
Jane Austen's works deal with class in 18th-century England.
(uncountable) Admirable behavior; elegance.
Apologizing for losing your temper, even though you were badly provoked, showed real class.
(countable and uncountable) A group of students in a regularly scheduled meeting with a teacher.
The class was noisy, but the teacher was able to get their attention with a story.
A series of classes covering a single subject.
I took the cooking class for enjoyment, but I also learned a lot.
(countable) A group of students who commenced or completed their education during a particular year. A school class.
The class of 1982 was particularly noteworthy.
(countable) A category of seats in an airplane, train or other means of mass transportation.
I used to fly business class, but now my company can only afford economy.
(biology, taxonomy, countable) A rank in the classification of organisms, below phylum and above order; a taxon of that rank.
Magnolias belong to the class Magnoliopsida.
(computing) A set of objects having the same behavior (but typically differing in state), or a template defining such a set.
(mathematics) A collection of sets definable by a shared property.
The class of all sets is not a set.
(Can we verify(+) this sense?) Best of its kind.
It is the class of Italian bottled waters.
(military) A group of people subject to be conscripted in the same military draft, or more narrowly those persons actually conscripted in a particular draft.