class class /ˈklæs/

noun

1. () A collection of things sharing a common attribute  ( family , class , category )
   a collection of things sharing a common attribute
    There are two classes of detergents
   there are two classes of detergents
   
2. () A body of students who are taught together  ( course , form , class , grade [ N. American] )
   a body of students who are taught together
    Early morning classes are always sleepy
   early morning classes are always sleepy
   
   
3. () People having the same social, economic, or educational status  ( socio-economic class , stratum , social class , class )
   people having the same social, economic, or educational status
    The working class
   the working class
    An emerging professional class
   an emerging professional class
   
   
4. () Education imparted in a series of lessons or meetings  ( course of instruction , course of study , class , course )
   education imparted in a series of lessons or meetings
    He took a course in basket weaving
   he took a course in basket weaving
    Flirting is not unknown in college classes
   flirting is not unknown in college classes
   
5. () A league ranked by quality  ( division , class )
   a league ranked by quality
    He played baseball in class D for two years
   he played baseball in class D for two years
    Princeton is in the NCAA Division 1-AA
   Princeton is in the NCAA Division 1-AA
   
6. Elegance in dress or behavior  ( class )
   elegance in dress or behavior
    She has a lot of class
   she has a lot of class
   
7. (biology) a taxonomic group containing one or more orders  ( class )
   (biology) a taxonomic group containing one or more orders
   
8. A body of students who graduate together  ( class , year )
   a body of students who graduate together
    The class of '97
   the class of '97
    She was in my year at Hoehandle High
   she was in my year at Hoehandle High
   

verb

1. () Arrange or order by classes or categories  ( assort , sort , class , classify , separate , sort out )
   arrange or order by classes or categories
    How would you classify these pottery shards--are they prehistoric?
   How would you classify these pottery shards--are they prehistoric?