Fire Priggers.  Villains who rob at fires under pretence
  of assisting in removing the goods.

Fire ship.  A wench who has the venereal disease.

Fire shovel.  He or she when young, was fed with a fire
  shovel; a saying of persons with wide mouths.

Fish.  A seaman.  A scaly fish; a rough, blunt tar.  To
  have other fish to fry; to have other matters to mind,
  something else to do.

Fit.  Suitable.  It won’t fit; It will not suit or do.

Five shillings.  The sign of five shillings, i.e. the crown. 
  Fifteen shillings; the sign of the three crowns.

Fizzle.  An escape backward,

FLABAGASTED. Confounded.

Flabby.  Relaxed, flaccid, not firm or solid.

Flag.  A groat.  Cant.—­The flag of defiance, or bloody flag
  is out; signifying the man is drunk, and alluding to the
  redness of his face.  Sea phrase.

Flam.  A lie, or sham story:  also a single stroke on a drum. 
  To flam; to hum, to amuse, to deceive.  Flim flams; idle
  stories.

Flap dragon.  A clap, or pox.

To flare.  To blaze, shine or glare.

Flash.  Knowing.  Understanding another’s meaning.  The
  swell was flash, so I could not draw his fogle.  The
  gentleman saw what I was about, and therefore I could not
  pick his pocket of his silk handkerchief.  To patter flash,
  to speak the slang language.  See patter.

Flash PANNEYS.  Houses to which thieves and prostitutes
  resort.

  Next for his favourite Mot (Girl) the kiddey (Youth) looks
     about,
  And if she’s in a flash panney (Brothel) he swears he’ll have
     her out;
  So he fences (Pawns) all his togs (Cloathes) to buy her duds,
     (Wearing Apparel) and then
  He frisks (Robs) his master’s lob (Till) to take her from the
     bawdy ken (House).

          Flashsong.

Flash.  A periwig.  Rum flash; a fine long wig.  Queer
  flash; a miserable weather-beaten caxon.

To flash.  To shew ostentatiously.  To flash one’s ivory;
  to laugh and shew one’s teeth.  Don’t flash your ivory, but
  shut your potatoe trap, and keep your guts warm; the
  Devil loves hot tripes.

To flash the hash.  To vomit.  Cant.

Flash ken.  A house that harbours thieves.

Flash lingo.  The canting or slang language.

Flash man.  A bully to a bawdy house.  A whore’s bully.

Flat.  A bubble, gull, or silly fellow.

Flat cock.  A female.