Coventry.  To send one to Coventry; a punishment inflicted
  by officers of the army on such of their brethren
  as are testy, or have been guilty of improper behaviour,
  not worthy the cognizance of a court martial.  The person
  sent to Coventry is considered as absent; no one must
  speak to or answer any question he asks, except relative
  to duty, under penalty of being also sent to the same place. 
  On a proper submission, the penitent is recalled, and
  welcomed by the mess, as just returned from a journey to
  Coventry.

Covey.  A collection of whores.  What a fine covey here
  is, if the Devil would but throw his net!

To couch A hogshead.  To lie down to sleep.  Cant.

Counterfeit Crank.  A general cheat, assuming all sorts
  of characters; one conterfeiting the falling sickness.

Country Harry.  A waggoner.  Cant.

Country put.  An ignorant country fellow.

County work.  Said of any work that advances slowly.

Court card.  A gay fluttering coxcomb.

Court holy water, court promises.  Fair speeches and promises,
  without performance.

Court of assistants.  A court often applied to by young
  women who marry old men.

Cow.  To sleep like a cow, with a **** at one’s a-se; said
  of a married man; married men being supposed to sleep
  with their backs towards their wives, according to the
  following proclamation: 

      All you that in your beds do lie,
      Turn to your wives, and occupy: 
      And when that you have done your best,
      Turn a-se to a-se, and take your rest.

Cow juice.  Milk.

COW’S baby.  A calf.

COW’S COURANT.  Gallop and sh—–­e.

Cow-handed. Awkward.

Cow-hearted. Fearful.

Cow itch.  The product of a sort of bean, which excites an
  insufferable itching, used chiefly for playing tricks.

COW’S spouse.  A bull.

COW’S thumb.  Done to a cow’s thumb; done exactly.

Coxcomb.  Anciently, a fool.  Fools, in great families,
  wore a cap with bells, on the top of which was a piece of
  red cloth, in the shape of a cock’s comb.  At present,
  coxcomb signifies a fop, or vain self-conceited fellow.

Crab.  To catch a crab; to fall backwards by missing one’s
  stroke in rowing.

Crab lanthorn.  A peevish fellow.

Crab louse.  A species of louse peculiar to the human body;
  the male is denominated a cock, the female a hen.

Crab shells.  Shoes.  Irish.