Noun has 3 senses

• klein(n = noun.person) felix klein - German mathematician who created the Klein bottle (1849-1925);


• klein(n = noun.person) melanie klein - United States psychoanalyst (born in Austria) who was the first to specialize in the psychoanalysis of small children (1882-1960);


• klein(n = noun.person) calvin klein, calvin richard klein - United States fashion designer noted for understated fashions (born in 1942);