What is the meaning of Pikey?

A pike (type of fish).

Associated with or filled with pike (fish).

An itinerant person, especially one of Romani or Irish Traveller heritage.

A working-class (often underclass) person with negative connotations of benefit fraud, theft and living on rundown estates.

Associated with pikeys.

To steal.

↑ Oxford Dictionary of Modern Slang (2010, →ISBN, page 218: "From pike verb, perh. in the earlier sense, to steal."

Source: wiktionary.org