explānātor, ōris, m. [explano],
an explainer , interpreter : sunt enim explanatores, ut grammatici poëtarum, Cic. Div. 1, 51, 116: explanator aut interpres ejus legis, Lact. (Cic. ap. Lact.?) 6, 8.
explānātor ōris, m explano, an interpreter . ...
An Elementary Latin Dictionary