Definition of "Class" :

noun: education imparted in a series of lessons or meetings

"Flirting is not unknown in college classes."

noun: elegance in dress or behavior

"She has a lot of class."

noun: people having the same social, economic, or educational status

"The working class."

noun: a collection of things sharing a common attribute

"There are two classes of detergents."

noun: (biology) a taxonomic group containing one or more orders

noun: a body of students who are taught together

"Early morning classes are always sleepy."

noun: a body of students who graduate together

"The class of '97."

noun: a league ranked by quality

"He played baseball in class D for two years."

verb: arrange or order by classes or categories

"How would you classify these pottery shards--are they prehistoric?."