definition of
classify

[1] #1 classify v. [class, sort, assort, sort out, separate] arrange or order by classes or categories; "How would you classify these pottery shards--are they prehistoric?". wn

[2] #2 classify v. declare unavailable, as for security reasons; "Classify these documents". wn

[3] #3 classify v. [relegate] assign to a class or kind; "How should algae be classified?"; "People argue about how to relegate certain mushrooms". wn