What is "sly boots"

Boot \Boot\, n. [OE. bote, OF. bote, F. botte, LL. botta; of uncertain origin.]

1. A covering for the foot and lower part of the leg, ordinarily made of leather.

2. An instrument of torture for the leg, formerly used to extort confessions, particularly in Scotland.

   So he was put to the torture, which in Scotland they call the boots; for they put a pair of iron boots close on the leg, and drive wedges between them and the leg.
   --Bp. Burnet.

3. A place at the side of a coach, where attendants rode; also, a low outside place before and behind the body of the coach. [Obs.]

4. A place for baggage at either end of an old-fashioned stagecoach.

5. An apron or cover (of leather or rubber cloth) for the driving seat of a vehicle, to protect from rain and mud.

6. (Plumbing) The metal casing and flange fitted about a pipe where it passes through a roof.

   Boot catcher, the person at an inn whose business it was to pull off boots and clean them. [Obs.]
   --Swift.

   Boot closer, one who, or that which, sews the uppers of boots.

   Boot crimp, a frame or device used by bootmakers for drawing and shaping the body of a boot.

   Boot hook, a hook with a handle, used for pulling on boots.

   Boots and saddles (Cavalry Tactics), the trumpet call which is the first signal for mounted drill.

   Sly boots. See Slyboots, in the Vocabulary.