Jury mast. A JOURNIERE mast; i.e. a mast for the day or
  occasion.

Just-ass.  A punning appellation for a justice.

Ivy bush.  Like an owl in an ivy bush; a simile for a
  meagre or weasel-faced man, with a large wig, or very
  bushy hair.

Kate.  A picklock.  ’Tis a rum kate; it is a clever picklock. 
  Cant.

Keel bullies.  Men employed to load and unload the coal
  vessels.

KEELHAULING.  A punishment in use among the Dutch
  seamen, in which, for certain offences, the delinquent is
  drawn once, or oftener, under the ship’s keel:  ludicrously
  defined, undergoing a great hard-ship.

To keep.  To inhabit.  Lord, where do you keep? i.e.
  where are your rooms?  Academical phrase.  Mother, your
  tit won’t keep; your daughter will not preserve her virginity.

To keep it up.  To prolong a debauch.  We kept it up
  finely last night; metaphor drawn from the game of shuttle-
  cock.

Keeping cully.  One who keeps a mistress, as he supposes,
  for his own use, but really for that of the public.

KEFFEL.  A horse.  Welsh.

Kelter.  Condition, order.  Out of kelter; out of order.

Kelter.  Money.

Kemp’s morris.  William Kemp, said to have been the original
  Dogberry in Much ado about Nothing, danced a morris
  from London to Norwich in nine days:  of which he
  printed the account, A. D. 1600, intitled, Kemp’s Nine
  Days Wonder, &c.

Kemp’s shoes.  Would I had Kemp’s shoes to throw after
  you.  Ben Jonson.  Perhaps Kemp was a man remarkable
  for his good luck or fortune; throwing an old shoe, or shoes,
  after any one going on an important business, being by the
  vulgar deemed lucky.

Ken.  A house.  A bob ken, or a bowman ken; a well-furnished
  house, also a house that harbours thieves.  Biting
  the ken; robbing the house.  Cant.

Ken miller, or ken Cracker.  A housebreaker.  Cant.

Kent-street ejectment.  To take away the street door: 
  a method practised by the landlords in Kent-street, Southwark,
  when their tenants are above a fortnight’s rent in
  arrear.

Kerry security.  Bond, pledge, oath, and keep the
  money.

Ketch.  Jack Ketch; a general name for the finishers of the
  law, or hangmen, ever since the year 1682, when the office
  was filled by a famous practitioner of that name, of whom
  his wife said, that any bungler might put a man to death,
  but only her husband knew how to make a gentleman die
  sweetly.  This officer is mentioned in Butler’s Ghost, page
  54, published about the year 1682, in the following lines: