explĭcātor, ōris, m. [explico],
an expounder , explainer (Ciceron.): rerum explicator prudens, severus, gravis, Cic. Or. 9, 31; id. Inv. 2, 2, 6.
explicātor ōris, m explico, an expounder, explainer : rerum. ...
An Elementary Latin Dictionary
·noun One who unfolds or explains; an expounder; an <<Explainer>>. ...
Webster's Dictionary of the English Language