Definition of marco polo:
(n) :
(uncountable, games) A hunting game—usually played in a swimming pool—where the seeker moves with closed eyes or blindfolded, finding the other players by calling "Marco" and reacting to the other players' replies of "Polo".
(n) :
(countable) A renowned traveler.
(n) :
(game) Alternative form of Marco Polo. [(countable) A renowned traveler.]