What is "screw peg"

Peg \Peg\, n. [OE. pegge; cf. Sw. pigg, Dan. pig a point, prickle, and E. peak.]

1. A small, pointed piece of wood, used in fastening boards together, in attaching the soles of boots or shoes, etc.; as, a shoe peg.

2. A wooden pin, or nail, on which to hang things, as coats, etc. Hence, colloquially and figuratively: A support; a reason; a pretext; as, a peg to hang a claim upon.

3. One of the pins of a musical instrument, on which the strings are strained.
   --Shak.

4. One of the pins used for marking points on a cribbage board.

5. A step; a degree; esp. in the slang phrase ``To take one down peg.''

   To screw papal authority to the highest peg.
   --Barrow.

   And took your grandess down a peg.
   --Hudibras.

6. A drink of spirits, usually whisky or brandy diluted with soda water. [India]

   This over, the club will be visted for a ``peg,'' Anglice drink.
   --Harper's Mag.

7. (Baseball) a hard throw, especially one made to put out a baserunner.

   Peg ladder, a ladder with but one standard, into which cross pieces are inserted.

   Peg tankard, an ancient tankard marked with pegs, so as divide the liquor into equal portions. ``Drink down to your peg.''
   --Longfellow.

   Peg tooth. See Fleam tooth under Fleam.

   Peg top, a boy's top which is spun by throwing it.

   Screw peg, a small screw without a head, for fastening soles.

n. A small headless screw for fastening soles.