1. an alien who paid a fee to reside in an ancient Greek city;
The Collaborative International Dictionary of English v.0.48:
Metic \Met"ic\ (? or ?; 277), n. [Gr. ?, prop., changing one's
abode; ?, indicating change + ? house, abode: cf. L.
metoecus, F. m['e]t[`e]que.] (Gr. Antiq.)
A sojourner; an immigrant; an alien resident in a Grecian
city, but not a citizen. --Mitford.
The whole force of Athens, metics as well as citizens,
and all the strangers who were then in the city.
WordNet (r) 3.0 (2006):
n 1: an alien who paid a fee to reside in an ancient Greek city