Synonyms for Klein (same or very similar meaning)
WordNet sense 1 (German mathematician who created the Klein bottle (1849-1925)):
Felix KleinWordNet sense 2 (United States psychoanalyst (born in Austria) who was the first to specialize in the psychoanalysis of small children (1882-1960)):
Melanie KleinWordNet sense 3 (United States fashion designer noted for understated fashions (born in 1942)):
Calvin Klein, Calvin Richard KleinFrom the ODE community, based on WordNetadd/edit