The Collaborative International Dictionary of English v.0.48:
Earthling \Earth"ling\, n. [Earth + -ling.] An inhabitant of the earth; a mortal. [1913 Webster] Earthlings oft her deemed a deity. --Drummond. [1913 Webster]WordNet (r) 3.0 (2006):
earthling n 1: an inhabitant of the earth [syn: tellurian, earthling, earthman, worldling]