eofan /ˈiːəʊˌfæn/ noun1 •(slang, old-fashioned) One of the very first science fiction fans, from the period 1930–33.There was Charles Brown of Locus, the French fan and writer Georges Gallet, eofan Clifton Amsbury, and, of course, me and my wife Wendayne. — 1999 formseofans · eofen