Definitions of gaiter:

• noun:   legging consisting of a cloth or leather covering for the leg from the knee to the ankle
• noun:   a shoe covering the ankle with elastic gores in the sides
• noun:   a cloth covering (a legging) that provides covering for the instep and ankles
• name:  A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #18220)