e·phebe 
(ĕfēb′, ĭ-fēb) also e·phe·bus (ĭ-fēbəs)
(ĕfēb′, ĭ-fēb) also e·phe·bus (ĭ-fēbəs)n. pl. e·phebes also e·phe·bi (ĭ-fēbī)
A youth between 18 and 20 years of age in ancient Greece.
[Latin ephēbus, from Greek ephēbos : ep-, epi-, epi- + hēbē, early manhood.]
e·phebic adj.