Thorough go nimble.  A looseness, a violent purging.

Thorough cough.  Coughing and breaking wind backwards
  at the same time.

Thorough stitch.  To go thorough stitch; to stick at nothing;
  over shoes, over boots.

Thought.  What did thought do? lay’in bed and beshat
  himself, and thought he was up; reproof to any one who
  excuses himself for any breach of positive orders, by
  pleading that he thought to the contrary.

Three to one.  He is playing three to one, though sure to
  lose; said of one engaged in the amorous congress.

Three-penny upright.  A retailer of love, who, for the
  sum mentioned, dispenses her favours standing against a
  wall.

Three-legged mare, or stool.  The gallows, formerly
  consisting of three posts, over which were laid three
  transverse beams.  This clumsy machine has lately given place
  to an elegant contrivance, called the new drop, by which
  the use of that vulgar vehicle a cart, or mechanical
  instrument a ladder, is also avoided; the patients being left
  suspended by the dropping down of that part of the floor on
  which they stand.  This invention was first made use of for
  a peer.  See drop.

Three threads.  Half common ale, mixed with stale and
  double beer.

THREPS.  Threepence.

To throttle.  To strangle.

Throttle.  The throat, or gullet.

To thrum.  To play on any instrument sttfnged with wire. 
  A thrummer of wire; a player on the spinet, harpsichord,
  of guitar.

THRUMS. Threepence.

Thumb.  By rule of thumb:  to do any thing by dint of
  practice.  To kiss one’s thumb instead of the book; a vulgar
  expedient to avoid perjury in taking a false oath.

THCMMIKINS.  An instrument formerly used in Scotland,
  like a vice, to pinch the thumbs of persons accused of
  different crimes, in order to extort confession.

Thump.  A blow.  This is better than a thump on the back
  with a stone; said on giving any one a drink of good liquor
  on a cold morning.  Thatch, thistle, thunder, and thump;
  words to the Irish, like the Shibboleth of the Hebrews.

Thumping.  Great! a thumping boy.

Thwack.  A great blow with a stick across the shoulders.

TIB.  A young lass

TIBBY.  A cat.

TIB of the buttery.  A goose.  Cant.  Saint Tibb’s
  evening; the evening of the last day, or day of judgment: 
  he will pay you on St. Tibb’s eve.  Irish.

Tick.  To run o’tick; take up goods upon trust, to run in
  debt.  Tick; a watch.  See sessions papers.