Old English Flæming "native or inhabitant of Flanders," and Old Frisian Fleming, from Proto-Germanic *Flam- (cf. Medieval Latin Flamingus); see Flanders.
Fleming Flem·ing (flěm'ĭng), Sir Alexander. 1881-1955.
British bacteriologist who discovered penicillin in 1928. He shared a 1945 Nobel Prize for this achievement.