Source : Webster's Revised Unabridged Dictionary (1913)

Gaiter \Gait"er\, n. [F. gu[^e]tre, cf. Armor. gweltren; or
   perh. of German origin, and akin to E. wear, v.]
   1. A covering of cloth or leather for the ankle and instep,
      or for the whole leg from the knee to the instep, fitting
      down upon the shoe.

Gaiter \Gai"ter\, v. t.
   To dress with gaiters.

Source : WordNet®

gaiter
     n 1: a cloth covering (a legging) that provides covering for the
          instep and ankles [syn: {spat}, {spats}]
     2: a shoe covering the ankle with elastic gores in the sides
     3: legging consisting of a cloth or leather covering for the
        leg from the knee to the ankle