Refers to a person who sells goods on the street or door-to-door, often in a traditional or informal context.
In the old days, street vendors used to walk around town.
I can hear a peddler's voice from afar.
Compound of 物 (もの, 'thing, goods') + 売り (うり, 'selling'), the nominalized stem of 売る (うる, 'to sell').