Bag.  He gave them the bag, i.e. left them.

Bag of nails.  He squints like a bag of nails; i. e.
  his eyes are directed as many ways as the points of a bag
  of nails.  The old bag of nails at Pimlico; originally
  the BACCHANALS.

Baggage.  Heavy baggage; women and children.  Also a
  familiar epithet for a woman; as, cunning baggage,
  wanton baggage, &c.

Bakers dozen.  Fourteen; that number of rolls being allowed
  to the purchasers of a dozen.

Baker-KNEE’D.  One whose knees knock together in
  walking, as if kneading dough.

Balderdash.  Adulterated wine.

Ballocks.  The testicles of a man or beast; also a vulgar
  nick name for a parson.  His brains are in his ballocks,
  a cant saying to designate a fool.

BALUM RANCUM.  A hop or dance, where the women are
  all prostitutes.  N. B. The company dance in their
  birthday suits.

Balsam.  Money.

Bam.  A jocular imposition, the same as a humbug.  See
  humbug.

To bam.  To impose on any one by a falsity; also to
  jeer or make fun of any one.

To bamboozle.  To make a fool of any one, to humbug or
  impose on him.

Banaghan.  He beats Banaghan; an Irish saying of one
  who tells wonderful stories.  Perhaps Banaghan was a
  minstrel famous for dealing in the marvellous.

Bandbox.  Mine a-se on a bandbox; an answer to the
  offer of any thing inadequate to the purpose for which
  it is proffered, like offering a bandbox for a seat.

Banbury story of A cock and A bull.  A roundabout,
  nonsensical story.

BANDOG.  A bailiff or his follower; also a very fierce
  mastiff:  likewise, a bandbox.  Cant.

Bang up. (Whip.) Quite the thing, hellish fine.  Well
  done.  Compleat.  Dashing.  In a handsome stile. 
  A bang up cove; a dashing fellow who spends his money
  freely.  To bang up prime:  to bring your horses up in a
  dashing or fine style:  as the swell’s rattler and prads are
  bang up prime; the gentleman sports an elegant carriage
  and fine horses.

To bang.  To beat.

Banging.  Great; a fine banging boy.

Bang straw.  A nick name for a thresher, but applied
  to all the servants of a farmer.

Bankrupt cart.  A one-horse chaise, said to be so
  called by a Lord Chief Justice, from their being so
  frequently used on Sunday jaunts by extravagant
  shop-keepers and tradesmen.

BANKS’S horse.  A horse famous for playing tricks, the
  property of one Banks.  It is mentioned in Sir Walter
  Raleigh’s Hist. of the World, p. 178; also by Sir
  Kenelm Digby and Ben Jonson.