| Nestor (n.) A genus of parrots with gray heads. of New Zealand and papua, allied to the cockatoos. See Kaka. Thesaurus Entries Dutch uncle, Polonius, admonisher, adviser, backseat driver, buttinsky, confidant, consultant, counsel, counselor, expert, guide, instructor, kibitzer, meddler, mentor, monitor, orienter, preceptist, teacher | ![]() |