lostee Posted in L Best definition lostee A person, usually of the female persausion and quite young, who is completely retarded for the TV show “Lost”. “I finally met another Lostee at my school. JATE, SKATE and PB&J kicks ass!!!!11” How satisfied are you with the definition? Looking for lostee meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 42 times.