What is "teffi"

Teffi (, Saint Petersburg – 6 October 1952, Paris) was a Russian humorist writer. Teffi is a pseudonym. Her real name was Nadezhda Alexandrovna Lokhvitskaya (Наде́жда Алекса́ндровна Лoхви́цкая); after her marriage Nadezhda Alexandrovna Buchinskaya (Бучи́нская). Together with Arkady Averchenko she was one of the most prominent authors of the magazine Satiricon. Her birthday in various sources varies in the range 1871–76. The most recent findings say that she was born in May 1872. Teffi's sister Mirra Lokhvitskaya (1869–1905) was a notable Russian poet.