Beef eater.  A yeoman of the guards, instituted by Henry
  VII.  Their office was to stand near the bouffet, or
  cupboard, thence called Bouffetiers, since corrupted to Beef
  Eaters.  Others suppose they obtained this name from the
  size of their persons, and the easiness of their duty, as
  having scarce more to do than to eat the king’s beef.

Beetle-BROWED. One having thick projecting eyebrows.

Beetle-headed. Dull, stupid.

Beggar maker.  A publican, or ale-house keeper.

Beggar’s bullets.  Stones.  The beggar’s bullets began
  to fly, i.e. they began to throw stones.

Beilby’s ball.  He will dance at Beilby’s ball, where the
  sheriff pays the music; he will be hanged.  Who Mr.
  Beilby was, or why that ceremony was so called, remains
  with the quadrature of the circle, the discovery of the
  philosopher’s stone, and divers other desiderata yet
  undiscovered.

Belch.  All sorts of beer; that liquor being apt to cause
  eructation.

Belcher.  A red silk handkerchief, intermixed with yellow
  and a little black.  The kiddey flashes his belcher; the
  young fellow wears a silk handkerchief round his neck.

Bell, book, and candle.  They cursed him with bell,
  book, and candle; an allusion to the popish form of
  excommunicating and anathematizing persons who had
  offended the church.

To bear the bell.  To excel or surpass all competitors, to
  be the principal in a body or society; an allusion to the
  fore horse or leader of a team, whose harness is commonly
  ornamented with a bell or bells.  Some suppose it a term
  borrowed from an ancient tournament, where the victorious
  knights bore away the Belle or fair lady.  Others derive
  it from a horse-race, or other rural contentions, where bells
  were frequently given as prizes.

Bellows.  The lungs.

BELLOWER.  The town crier.

BELLOWSER.  Transportation for life:  i.e. as long.

Belly.  His eye was bigger than his belly; a saying of a
  person at a table, who takes more on his plate than he
  can eat.

Bellyfull.  A hearty beating, sufficient to make a man
  yield or give out.  A woman with child is also said to
  have got her belly full.

Belly cheat.  An apron.

Belly plea.  The plea of pregnancy, generally adduced by
  female felons capitally convicted, which they take care to
  provide for, previous to their trials; every gaol having, as
  the Beggar’s Opera informs us, one or more child getters,
  who qualify the ladies for that expedient to procure a respite.