Blind Cupid.  The backside.

BLINDMAN’S holiday.  Night, darkness.

Block houses.  Prisons, houses of correction, &c.

Blocked at both ends.  Finished.  The game is blocked
  at both ends; the game is ended.

Blood.  A riotous disorderly fellow.

Blood for blood.  A term used by tradesmen for bartering
  the different commodities in which they deal.  Thus a
  hatter furnishing a hosier with a hat, and taking payment
  in stockings, is said to deal blood for blood.

Blood money.  The reward given by the legislature on the
  conviction of highwaymen, burglars, &c.

Bloody back.  A jeering appellation for a soldier, alluding
  to his scarlet coat.

Bloody.  A favourite word used by the thieves in swearing,
  as bloody eyes, bloody rascal.

Bloss or blowen.  The pretended wife of a bully, or
  shoplifter.  Cant.

To blot the Skrip and Jar it.  To stand engaged or
  bound for any one.  Cant.

Blow.  He has bit the blow, i.e. he has stolen the goods. 
  Cant.

BLOWEN.  A mistress or whore of a gentleman of the
  scamp.  The blowen kidded the swell into a snoozing
  ken, and shook him of his dummee and thimble; the
  girl inveigled the gentleman into a brothel and robbed him
  of his pocket book and watch.

Blower.  A pipe.  How the swell funks his blower and
  lushes red tape; what a smoke the gentleman makes
  with his pipe, and drinks brandy.

To blow the GROUNSILS.  To lie with a woman on the
  floor.  Cant.

To blow the gab.  To confess, or impeach a confederate. 
  Cant.

Blow-up.  A discovery, or the confusion occasioned by one.

A BLOWSE, or BLOWSABELLA.  A woman whose hair is
  dishevelled, and hanging about her face; a slattern.

Blubber.  The mouth.—­I have stopped the cull’s blubber;
  I have stopped the fellow’s mouth, meant either by gagging
  or murdering him.

To blubber.  To cry.

To sport blubber.  Said of a large coarse woman, who
  exposes her bosom.

Blubber cheeks.  Large flaccid cheeks, hanging like
  the fat or blubber of a whale.

Blue, To look blue; to be confounded, terrified, or disappointed. 
  Blue as a razor; perhaps, blue as azure.

Blue boar.  A venereal bubo.

Blue devils.  Low spirits.

Blue flag.  He has hoisted the blue flag; he has commenced
  publican, or taken a public house, an allusion to
  the blue aprons worn by publicans.  See Admiral of
  the blue.