rent collector(n = noun.person) - a person who goes from house to house collecting rents for the owner;
is a kind of accumulator, collector, gatherer

bill collector, book collector, butterfly collector, coin collector, collector, collector of internal revenue, economic rent, garbage collector, ground rent, peppercorn rent, pinwheel wind collector, rack rent, refuse collector, rent, rent out, solar collector, stamp collector, tax collector, ticket collector, toll collector