Ralph Spooner.  A fool.

Ram cat.  A he cat.

Rammish.  Rank.  Rammish woman; a sturdy virago.

Rammer.  The arm.  The busnapper’s kenchin seized my
  rammer; i.e. the watchman laid hold of my arm.  Cant.

To Ramp.  To snatch, or tear any thing forcibly from the
  person.

RAMSHACKLED. Out of repair.  A ramshackled house;
  perhaps a corruption of ransacked, i.e. plundered.

Randle.  A set of nonsensical verses, repeated in Ireland
  by schoolboys, and young people, who have been guilty
  of breaking wind backwards before any of their compa-
  nions; if they neglect this apology, they are liable to certain
  kicks, pinches, and fillips, which are accompanied with
  divers admonitory couplets.

Randy.  Obstreperous, unruly, rampant.

RANGLING.  Intriguing with a variety of women.

Rank.  Stinking, rammish, ill-flavoured; also strong, great. 
  A rank knave; a rank coward:  perhaps the latter may
  allude to an ill savour caused by fear.

Rank rider.  A highwayman.

RANTALLION.  One whose scrotum is so relaxed as to be
  longer than his penis, i.e. whose shot pouch is longer
  that the barrel of his piece.

RANTIPOLE.  A rude romping boy or girl; also a gadabout
  dissipated woman.  To ride rantipole; the same as riding
  St. George.  See st. George.

RANTUM scantum.  Playing at rantum scantum; making
  the beast with two backs.

To rap To take a false oath; also to curse.  He rapped
  out a volley; i.e. he swore a whole volley of oaths.  To
  rap, means also to exchange or barter:  a rap is likewise an
  Irish halfpenny.  Rap on the knuckles; a reprimand.

RAPPAREES.  Irish robbers, or outlaws, who in the time of
  Oliver Cromwell were armed with short weapons, called
  in Irish RAPIERS, used for ripping persons up.

Rapper.  A swinging great lie.

Raree shew men.  Poor Savoyards, who subsist by shewing
  the magic lantern and marmots about London.

Rascal.  A rogue or villain:  a term borrowed from the
  chase; a rascal originally meaning a lean shabby deer, at
  the time of changing his horns, penis, &c. whence, in the
  vulgar acceptation, rascal is conceived to signify a man
  without genitals:  the regular vulgar answer to this reproach,
  if uttered by a woman, is the offer of an ocular demonstration
  of the virility of the party so defamed.  Some derive
  it from RASCAGLIONE, an Italian word signifying a man.
  without testicles, or an eunuch.

Rat.  A drunken man or woman taken up by the watch,
  and confined in the, watch-house.  Cant.  To smell a rat;
  to suspect some intended trick, or unfair design.