Source : Webster's Revised Unabridged Dictionary (1913)

Quoit \Quoit\, n. [OE. coite; cf. OF. coitier to spur, press,
   (assumed) LL. coctare, fr. L. coquere, coctum, to cook, burn,
   vex, harass, E. cook, also W. coete? a quoit.]
   1.
      (a) A flattened ring-shaped piece of iron, to be pitched
          at a fixed object in play; hence, any heavy flat
          missile used for the same purpose, as a stone, piece
          of iron, etc.
      (b) pl. A game played with quoits. --Shak.

   2. The discus of the ancients. See {Discus}.

   3. A cromlech. [Prov. Eng.] --J. Morley.

Quoit \Quoit\, v. i.
   To throw quoits; to play at quoits.

         To quoit, to run, and steeds and chariots drive.
                                                  --Dryden.

Quoit \Quoit\, v. t.
   To throw; to pitch. [Obs. or R.] --Shak.

Source : WordNet®

quoit
     n : game equipment consisting of a ring of iron or circle of
         rope used in the game of quoits