eph·or 
(ĕfôr′, -ər)
(ĕfôr′, -ər)n. pl. eph·ors or eph·o·ri (-ə-rī′)
One of five elected magistrates exercising a supervisory power over the kings of Sparta.
[Latin ephorus, from Greek ephoros, from ephorān, to oversee : ep-, epi-, epi- + horān, to see; see wer-3 in the Appendix of Indo-European roots.]
ephor·ate′ (-ə-rāt′, -ə-rĭt) n.