Definition of costermonger in English:
 costermonger
noun ˈkɒstəmʌŋɡəˈkɑstərˌməŋɡər
British dated A person who sells goods, especially fruit and vegetables, from a handcart in the street.
 Example sentencesExamples
-  It is an Act to prevent obstruction, and I think that its whole scheme shows that it is aimed at barrow-boys, costermongers, hawkers or others who expose goods in the street for sale and offer them for sale at that time.
 -  The old fruit and veg market that once echoed with the calls of cockney costermongers is now home to gourmet burger bars and stalls selling Javanese pottery.
 -  A Cockney costermonger is revealed as the new Earl of Hareford to the consternation of his aristocratic relations.
 -  Indeed, I could have loaded them all onto a borrowed costermonger's barrow and shifted them myself if I'd needed to.
 -  Market barrows, or costermongers, originated in the East End of London and remain a popular scene in places like Victoria Station, Covent Garden and Leather Lane in Holborn.
 
Origin
  
Early 16th century (denoting an apple seller): from Costard + -monger.
   Definition of costermonger in US English:
 costermonger
nounˈkästərˌməNGɡərˈkɑstərˌməŋɡər
British dated A person who sells goods, especially fruit and vegetables, from a handcart in the street.
 Example sentencesExamples
-  Indeed, I could have loaded them all onto a borrowed costermonger's barrow and shifted them myself if I'd needed to.
 -  A Cockney costermonger is revealed as the new Earl of Hareford to the consternation of his aristocratic relations.
 -  Market barrows, or costermongers, originated in the East End of London and remain a popular scene in places like Victoria Station, Covent Garden and Leather Lane in Holborn.
 -  The old fruit and veg market that once echoed with the calls of cockney costermongers is now home to gourmet burger bars and stalls selling Javanese pottery.
 -  It is an Act to prevent obstruction, and I think that its whole scheme shows that it is aimed at barrow-boys, costermongers, hawkers or others who expose goods in the street for sale and offer them for sale at that time.
 
Origin
  
Early 16th century (denoting an apple seller): from costard + -monger.