HYP, or hip.  A mode of calling to one passing by.  Hip,
  Michael, your head’s on fire; a piece of vulgar wit to a
  red haired man.

HYP.  The hypochondriac:  low spirits.  He is hypped; he
  has got the blue devils, &c.

Jabber.  To talk thick and fast, as great praters usually
  do, to chatter like a magpye; also to speak a foreign
  language.  He jabbered to rne in his damned outlandish
  parlez vous, but I could not understand him; he chattered
  to me in French, or some other foreign language, but
  I could not understand him.

Jack.  A farthing, a small bowl serving as the mark for
  bowlers.  An instrument for pulling off boots.

Jack Adams. A fool.  Jack Adams’s parish; Clerkenwell.

Jack at A pinch, A poor hackney parson.

Jack in A box, A sharper, or cheat.  A child in the mother’s
  womb.

Jack in an office, An insolent fellow in authority.

Jack Ketch.  The hangman; vide Derrick and Ketch.

Jack nasty face.  A sea term, signifying a common
  sailor.

Jack of legs.  A tall long-legged man; also a giant, said
  to be buried in Weston church, near Baldock, in Hertfordshire,
  where there are two stones fourteen feet distant,
  said to be the head and feet stones of his grave.  This
  giant, says Salmon, as fame goes, lived in a wood here, and
  was a great robber, but a generous one; for he plundered
  the rich to feed the poor:  he frequently took bread for
  this purpose from the Baldock bakers, who catching him
  at an advantage, put out his eyes, and afterwards hanged
  him upon a knoll in Baldock field.  At his death he made
  one request, which was, that he might have his bow and
  arrow put into his hand, and on shooting it off, where the
  arrow fell, they would bury him; which being granted,
  the arrow fell in Weston churchyard.  Above seventy
  years ago, a very large thigh bone was taken out of the
  church chest, where it had lain many years for a show,
  and was sold by the clerk to Sir John Tradescant, who,
  it is said, put it among the rarities of Oxford.

Jack pudding.  The merry andrew, zany, or jester to a
  mountebank.

Jack Robinson.  Before one could say Jack Robinson; a
  saying to express a very short time, originating from a
  very volatile gentleman of that appellation, who would call
  on his neighbours, and be gone before his name could
  be announced.

Jack sprat.  A dwarf, or diminutive fellow.

Jack tar.  A sailor.

Jack weight.  A fat man.

Jack whore.  A large masculine overgrown wench.