1) Bit of riffraff 2) Cousin of a mudlark 3) Street urchin 4) Urchin 5) Vulgar one 1) Gamin 2) Street urchin 3) Urchin 
• (n.) A small poster, suitable for a curbstone. • (n.) A curbstone broker.
Gut'ter·snipe' noun (Slang) (a) A small poster, suitable for a curbstone. (b) A curbstone broker. [ U. S.] 
guttersnipe 1. A child who spends most of his time in the streets especially in slum areas. 2. An insult suggesting that someone is regarded as having a rough or vulgar manner; especially, somebody with a lower-class background. 3. A child who wears dirty ragged clothes, has rough manners, and lives in the streets.
a person belonging to or characteristic of the lowest social group in a city. · a street urchin.