These are words in the English language which come from Romani.
Bar - 'stone' in Romani, but colloquially used to mean a pound coin
Chav - a member of a youth subculture (from cha = "child")
Chor - to steal, from the Romani word meaning the same
Cosh - a weapon, truncheon, baton (from the Romani word cosht = "stick")
Cushy - easy, good, fine (from the Romani word kusht or kushti)
Cushty - good (from the Romani word kusht or kushti)
Dinlo - idiot (either from the Romani word "dilo" meaning fool, or "dinilo" meaning crazy)
drag - to wear clothing carrying symbolic significance commonly associated with the opposite gender (possibly from indraka = "dress")
drag - a car, to race a car as in drag racing
Gadjo or Gadjie - a non-Romani
Jell - to go, from the Romani word "jall"
Lollipop - a type of candy, from the Romani "loli phabai", meaning red apple
Moosh - colloquial meaning a man, a bloke, from Romani moosh meaning man.
Nark - a police informer (from nāk, nose)
Pal - a friend, from the Romani word phral, meaning brother
Ratley - a female, from the Romani word "rakli" meaning the same
Romanipen - the spirit of being Romani, "Romani-ness"
Shiv - an improvised knife or similar weapon (possibly from chivomengro = "knife")
Skip (waste collecting container like on building sites) - from Romani word skip meaning basket
Togs - clothes (colloquial) from the Romani word togs meaning clothes